Vermont Code of Rules, Agency 31 — Department of Public Service

Subagency 010 VERMONT ENHANCED 9-1-1 BOARD

Chapter 001 LOCATABLE ADDRESSING

31-001 Code Vt. R. 31-010-001-X LOCATABLE ADDRESSING

LOCATABLE ADDRESSING RULE FOR ENHANCED 9-1-1

This rule applies to any municipality that elects to participate in the statewide enhanced 9-1-1 system.

Section 1.1 Road Naming and Numbering

(a) Road naming and numbering of all public and private roads within town boundaries shall be created, updated, and completed according to the standards defined by the Enhanced 9-1-1 Board. (Contact Enhanced 9-1-1 Board for a copy of its standards.)

Section 1.2 Geographic Information Systems GIS Data and Mapping

(a) If a municipality that has elected to participate in the enhanced 9-1-1 system chooses to use a Geographic Information System (GIS) to facilitate road naming and numbering it shall conform to relevant standards established by the Vermont Center for Geographic Information, Inc. (VCGI) of Chapter 8 of Title 10 V.S.A.

• spatially-referenced databases used to provide enhanced 9-1-1 services;

• the procedures for defining, creating or updating such databases;

• maps that display these data; and

• other matters relating to the use of geographic information systems (GIS).

(Contact Enhanced 9-1-1 Board for a copy of its standards.)

Section 1.3 Grandfather Clause

(a) The Board may, for good cause, grant exceptions in particular cases to any provision of its standards.

History

• STATUTORY AUTHORITY: 30 V.S.A. § 7053
• EFFECTIVE DATE: April 17, 1995 Secretary of State Rule Log # 95-28
• AMENDED: March 2011 [Renumbered from 30 020 001]; December 2012 [correction]

Subagency 000 GENERAL

Chapter 002 ENERGY EFFICIENCY STANDARDS FOR APPLIANCES AND EQUIPMENT (2.00)

31-002 Code Vt. R. 31-000-002-X ENERGY EFFICIENCY STANDARDS FOR APPLIANCES AND EQUIPMENT (2.00)

Section 2.10 Purpose

(A) This rule establishes minimum efficiency standards for certain products sold or installed in the state.

Section 2.20 Definitions

(A) "Ballast" means a device used with an electric discharge lamp to obtain necessary circuit conditions (voltage, current, and waveform) for starting and operating the lamp.

(B) "Commissioner" means the commissioner of the department of public service.

(C) "Compensation" means money or any other valuable thing, regardless of form, received or to be received by a person for services rendered.

(D) "Electricity ratio (ER)" is the ratio of furnace electricity use to total furnace energy use. ER = (3.412E AE)/(1000E F + 3.412 E AE) where E AE (average annual auxiliary electrical consumption) and E F (average annual fuel energy consumption) are defined in Appendix N to subpart B to Title 10, part 430 of the Code of Federal Regulations.

(E) "High-intensity discharge lamp" means a lamp in which light is produced by the passage of an electric current through a vapor or gas and in which the light-producing arc is stabilized by bulb wall temperature, and the arc tube has a bulb wall loading in excess of three watts per square centimeter.

(F) "Medium voltage dry-type distribution transformer" means a transformer that:

(1) has an input voltage of more than 600 volts but less than or equal to 34,500 volts;

(2) is air-cooled;

(3) does not use oil as a coolant; and

(4) is rated for operation at a frequency of 60 Hertz.

(G) "Metal halide lamp" means a high intensity discharge lamp in which the major portion of the light is produced by radiation of metal halides and their products of dissociation, possibly in combination with metallic vapors.

(H) "Metal halide lamp fixture" means a light fixture designed to be operated with a metal halide lamp and a ballast for a metal halide lamp.

(I) "Probe-start metal halide ballast" means a ballast used to operate metal halide lamps which does not contain an ignitor and which instead starts lamps by using a third starting electrode probe in the arc tube.

(J) "Residential boiler" means a self-contained appliance that is primarily designed for space heating by means of steam or hot water and that uses only single- phase electric current in conjunction with natural gas, propane, or home heating oil, and which has a heat input rate of less than 300,000 Btus per hour.

(K) "Residential furnace" means a self-contained space heater designed to supply heated air through ducts of more than 10 inches in length and which utilizes only single-phase electric current or single-phase electric current or DC current in conjunction with natural gas, propane, or home heating oil, and which:

(1) is designed to be the principal heating source for the living space of one or more residences;

(2) is not contained within the same cabinet with a central air conditioner whose rated cooling capacity is above 65,000 Btus per hour; and

(3) has a heat input rate of less than 225,000 Btus per hour.

(L) "Single-voltage external AC to DC power supply" means a device that:

(1) is designed to convert line voltage AC input into lower voltage DC output;

(2) is able to convert to only one DC output voltage at a time;

(3) is sold with, or intended to be used with, a separate end-use product that constitutes the primary power load;

(4) is contained within a separate physical enclosure from the end-use product;

(5) is connected to the end-use product via a removable or hard-wired male or female electrical connection, cable, cord, or other wiring;

(6) does not have batteries or battery packs, including those that are removable, that physically attach directly to the power supply unit;

(7) does not have a battery chemistry or type selector switch and indicator light; or does not have a battery chemistry or type selector switch and a state of charge meter; and

(8) has a nameplate output power less than or equal to 250 watts.

(M) "State-regulated incandescent reflector lamp" means a lamp that is not colored or designed for rough or vibration service applications, that has an inner reflective coating on the outer bulb to direct the light, an E26 medium screw base, and a rated voltage or voltage range that lies at least partially within 115 and 130 volts, and that falls into either of the following categories:

(1) a blown PAR (BPAR), bulged reflector (BR), or elliptical reflector (ER) bulb shape, with a diameter which equals or exceeds 2.25 inches; or

(2) a reflector (R), parabolic aluminized reflector (PAR), or similar bulb shape with a diameter of 2.25 to 2.75 inches.

(N) "Transformer" means a device that consists of two or more coils of insulated wire and that is designed to transfer alternating current by electromagnetic induction from one coil to another, in order to change the original voltage or current value.

(1) The term "transformer" does not include:

(i) devices with multiple voltage taps, with the highest voltage tap equaling at least 20 percent more than the lowest voltage tap; or

(ii) devices, such as those commonly known as drive transformers, rectifier transformers, auto transformers, uninterruptible power system transformers, impedance transformers, regulating transformers, sealed and nonventilating transformers, machine tool transformers, welding transformers, grounding transformers, or testing transformers, that are designed to be used in a special purpose application and are unlikely to be used in general purpose applications.

Section 2.30 Applicability and Exclusions

2.31 APPLICABILITY

(A) These rules apply to the following types of new products sold, offered for sale, or installed in Vermont :

(1) Medium voltage dry-type distribution transformers.

(2) Metal halide lamp fixtures.

(3) Residential furnaces and residential boilers.

(4) Single-voltage external AC to DC power supplies.

(5) State-regulated incandescent reflector lamps.

(B) No new medium voltage dry-type distribution transformer, state-regulated incandescent reflector lamp, or single-voltage external AC to DC power supply manufactured on or after January 1, 2008 may be sold or offered for sale in the state unless the efficiency of the new product meets or exceeds the efficiency standards set forth in this rule.

(C) On or after February 15, 2010, no new metal halide lamp fixture may be sold or offered for sale in the state unless the efficiency of the new product meets or exceeds the efficiency standards set forth in this rule.

(D) One year after the date upon which the sale or offering for sale of certain products becomes subject to the requirements of subsection (A), (B), or (C) of this section, no new products may be installed for compensation in the state unless the efficiency of a new product meets or exceeds the efficiency standards set forth in this rule.

(E) Owners and operators of commercial and industrial facilities shall be allowed to utilize appliances and equipment that do not meet the requirements of this rule for the repair or replacement of existing equipment, provided that the equipment being repaired or replaced was acquired before the implementation date determined according to the provisions of this section. At the discretion of the owners and operators, these appliances and equipment may be used at any time before or after the effective date of those requirements.

2.32 EXCLUSIONS

(A) These rules do not apply to:

(1) New products manufactured in the State and sold outside the State and the equipment used in manufacturing those products.

(2) New products manufactured outside the State and sold at wholesale inside the State for final retail sale and installation outside the State.

(3) Products installed in mobile manufactured homes at the time of construction.

(4) Products designed expressly for installation and use in recreational vehicles.

Section 2.40 Efficiency Standards

(A) Medium voltage dry-type distribution transformers shall meet minimum efficiency levels three-tenths of a percentage point higher than the Class 1 efficiency levels for medium voltage distribution transformers specified in Table 4-2 of the "Guide for Determining Energy Efficiency for Distribution Transformers" published by the National Electrical Manufacturers Association (NEMA Standard TP-1-2002).

(B) Metal halide lamp fixtures designed to be operated with lamps rated greater than or equal to 150 watts but less than or equal to 500 watts shall not contain a probe-start metal halide ballast.

(C) Residential furnaces and residential boilers shall meet or exceed the following Annual Fuel Utilization Efficiency (AFUE) and electricity ratio values:

(1) AFUE shall be measured in accordance with the federal test method for measuring the energy consumption of furnaces and boilers contained in Appendix N to subpart B of Title 10, part 430 of the Code of Federal Regulations.

(2) The commissioner may exempt compliance with these residential furnace or residential boiler AFUE standards at any building, site, or location where complying with these standards would be in conflict with any local zoning ordinance, building or plumbing code, or other rule regarding installation and venting of residential boilers or residential furnaces. Requests for exemption must be submitted to the Commissioner in writing.

(3) In accordance with 9 V.S.A. § 2796(c), the commissioner, in consultation with the attorney general, shall determine if implementation of state standards herein for residential furnaces or boilers requires a waiver from federal preemption. If the commissioner determines that a waiver from federal preemption is necessary, the state standard shall go into effect at the earliest date permitted by federal law. If the commissioner determines that a waiver from federal preemption is not needed for residential furnaces or boilers, then such state standards shall go into effect on June 1, 2010.

(D) Single-voltage external AC to DC power supplies shall meet the energy efficiency requirements of the following table:

(1) This standard applies to single voltage AC to DC power supplies that are sold individually and to those that are sold as a component of or in conjunction with another product. Single voltage AD to DC power supplies that are made available by a product manufacturer as accessories, service parts, or spare parts for its products manufactured prior to January 1, 2010 shall be exempt from the requirements of this standard.

(2) For purposes of this subdivision (D), the efficiency of single-voltage external AC to DC power supplies shall be measured in accordance with the test methodology specified by the U.S. Environmental Protection Agency's Energy Star Program, "Test Method for Calculating the Energy Efficiency of Single-Voltage External AC-DC and AC-AC Power Supplies (August 11, 2004)."

(E) State-regulated incandescent reflector lamps shall meet the minimum average lamp efficacy requirements for federally regulated incandescent reflector lamps contained in 42 U.S.C. § 6295 (i)(1)(A).

(1) The following types of incandescent reflector lamps are exempt from these requirements:

(i) lamps rated at 50 watts or less of the following types: BR30, ER30, BR40, and ER40;

(ii) lamps rated at 65 watts of the following types: BR30, BR40, and ER40; and

(iii) R20 lamps of 45 watts or less.

Section 2.50 Certification and Labeling

(A) Manufacturers of new products covered by this rule, except for single voltage external AC to DC power supplies, shall certify to the commissioner or the commissioner's designee that these products are in compliance with the provisions of this rule. These certifications shall be based on test results.

(B) Manufacturers of new products covered by this rule shall identify each product offered for sale or installation in the state as being in compliance with the provisions of this rule by means of a mark, label, or tag on the product and packaging at the time of sale or installation.

Section 2.60 Penalties and Enforcement

(A) With prior notice and at reasonable and convenient hours, the commissioner may cause periodic inspections to be made of distributors or retailers of products covered by this rule in order to determine compliance with the provisions of this rule.

(B) Any manufacturer, or distributor, or any person who installs a product covered by this rule for compensation, who violates any provision of this chapter shall be subject to a civil penalty of not more than $ 250.00. Each violation shall constitute a separate offense, and each day that such violation continues shall constitute a separate offense.

History

• STATUTORY AUTHORITY: 9 V.S.A. §§ 2791 to 2798
• EFFECTIVE DATE: January 4, 2010 Secretary of State Rule Log #09-040

Chapter 003 VERMONT COMMERCIAL BUILDING ENERGY STANDARDS (CBES) AMENDMENTS

31-003 Code Vt. R. 31-000-003-X VERMONT COMMERCIAL BUILDING ENERGY STANDARDS (CBES) AMENDMENTS

These rules are adopted under 30 V.S.A. § 53. This document shall be known and cited as the 2024 Vermont Commercial Building Energy Standard Amendments. The 2020 Vermont Commercial Building Energy Standards (First Printing: July 2020) published by International Code Council (ICC), Inc., as amended herein, are incorporated by reference and are available on the ICC website at: www.iccsafe.org

PREFACE

delete and replace Preface as follows:

Introduction

The 2024 Vermont Commercial Building Energy Standards (CBES) is based on the 2020 Vermont Commercial Building Energy Standards (CBES), which are based upon the International Energy Conservation Code (IECC) 2018 edition. The 2024 CBES also includes elements of the 2021 IECC energy efficiency requirements as well as select language updates and additional, more stringent Vermont energy efficiency requirements. The 2024 CBES also incorporates elements of ANSI/ASHRAE/IES Standard 90.1- 2019 Energy Standard for Buildings Except Low-Rise Residential Buildings.

This comprehensive energy conservation code establishes minimum regulations for energy efficient buildings using prescriptive and performance-related provisions. It is founded on broad- based principles that make possible the use of new materials and new energy efficient designs.

The International Energy Conservation Code provisions provide many benefits, among which is the model code development process that offers an international forum for energy professionals to discuss performance and prescriptive code requirements. This model code also encourages international consistency in the application of provisions.

Development

This 2024 CBES is founded on principles intended to establish provisions consistent with the scope of an energy conservation code that adequately conserves energy; provisions that do not unnecessarily increase construction costs; provisions that do not restrict the use of new materials, products or methods of construction; and provisions that do not give preferential treatment to particular types or classes of materials, products or methods of construction.

Background

The Vermont Commercial Building Energy Standards (CBES) was adopted by statute (30 V.S.A. § 53) in 2006. This code applies to all commercial buildings and residential building 4 stories or greater above grade in Vermont and took effect January 1, 2007.

Update Process

The Commercial Building Energy Standards statute requires that revisions to the CBES are made promptly after the issuance of updated standards under the International Energy Conservation Code (IECC). The Department of Public Service (PSD) is required to convene stakeholders that include mortgage lenders, builders, building designers, utility representatives, and other persons with experience and expertise prior to the adoption of a revised CBES to provide recommendations.

The 2024 CBES is based on the language in the International Energy Conservation Code (IECC) 2018 and 2021 editions and incorporates elements of ANSI/ASHRAE/IES Standard 90.1- 2019 Energy Standard for Buildings Except Low-Rise Residential Buildings. The 2024 CBES includes a new "Additional Efficiency, Renewable, and Load Management Requirements" section based on a points approach to code compliance. The addition of "points" provides builders and designers greater flexibility in complying with the CBES. The Vermont PSD held a series of code collaborative meetings in 2021 and a series of stakeholder and advisory committee meetings in 2022 to gather feedback on proposed changes to the CBES. The revisions presented in this document were modified based on input received from these meetings.

EFFECTIVE USE OF THE 2024 VERMONT COMMERCIAL BUILDING ENERGY STANDARDS

The 2024 Vermont Commercial Building Energy Standards (CBES) is a code that regulates minimum energy conservation requirements for new buildings as well as additions, alterations, renovations, and repairs to existing buildings. The 2024 CBES addresses energy conservation requirements for all aspects of energy uses in commercial construction, including heating and ventilating, lighting, water heating, and power usage for appliances and building systems.

The 2024 CBES is a design document. For example, before constructing a building, the designer must determine the minimum insulation R-values and fenestration U-factors for the building exterior envelope. The CBES sets forth minimum requirements for exterior envelope insulation, window and door U-factors and SHGC ratings, duct insulation, lighting and power efficiency, mechanical ventilation, and water distribution insulation.

Arrangement and Format of the 2024 CBES

The 2024 CBES, like other codes published by ICC, is arranged and organized to follow sequential steps that generally occur during a plan review or inspection. The 2024 CBES is divided into six different parts:

Italicized Terms

Selected terms set forth in Chapter 2: Definitions, are italicized where they appear in code text. Such terms are not italicized where the definition set forth in Chapter 2 does not impart the intended meaning in the use of the term. The terms selected have definitions that the user should read carefully to facilitate better understanding of the code.

The following is a chapter-by-chapter synopsis of the scope and intent of the provisions of the 2024 Vermont Commercial Building Energy Standards:

Chapter 1: Scope and Administration. This chapter contains provisions for the application, enforcement and administration of subsequent requirements of the code. In addition to establishing the scope of the code, Chapter 1 identifies which buildings and structures come under its purview. Chapter 1 is largely concerned with maintaining "due process of law" in enforcing the energy conservation criteria contained in the body of this code. Only through careful observation of the administrative provisions can the code official or other authority having jurisdiction, where one exists, reasonably expect to demonstrate that "equal protection under the law" has been provided.

Chapter 2 Definitions. Chapter 2 is the repository of the definitions of terms used in the body of the code. Codes are technical documents and every word, term and punctuation mark can impact the meaning of the code text and the intended results. The code often uses terms that have a unique meaning in the code and the code meaning can differ substantially from the ordinarily understood meaning of the term as used outside of the code.

The terms defined in Chapter 2 are deemed to be of prime importance in establishing the meaning and intent of the code text. The user of the code should be familiar with and consult this chapter because the definitions are essential to the correct interpretation of the code and the user may not be aware that a term is defined.

Where understanding of a term's definition is especially key to or necessary for understanding of a particular code provision, the term is shown in italics wherever it appears in the code. This is true only for those terms that have a meaning that is unique to the code. In other words, the generally understood meaning of a term or phrase might not be sufficient or consistent with the meaning prescribed by the code; therefore, it is essential that the code-defined meaning be known.

Guidance regarding tense, gender and plurality of defined terms as well as guidance regarding terms not defined in this code is provided.

Chapter 3 General Requirements. Chapter 3 provides interior design conditions that are used as a basis for assumptions in heating and cooling load calculations and provides basic material requirements for insulation materials and fenestration materials and provides standards for commercial mechanical ventilation and combustion safety.

Chapter 4 Commercial Energy Efficiency. Chapter 4 contains the energy-efficiency-related requirements for the design and construction of most types of commercial buildings, and residential buildings greater than three stories in height above grade. This chapter defines requirements for the portions of the building and building systems that impact energy use in new commercial construction and new residential construction greater than three stories in height and promotes the effective use of energy. The provisions within the chapter promote energy efficiency in the building envelope, the heating and cooling system and the service water heating system of the building.

Chapter 5 Existing Buildings. Chapter 5 of each set of provisions contains the technical energy efficiency requirements for existing buildings. Chapter 5 provisions address the maintenance of buildings in compliance with the code as well as how additions, alterations, repairs and changes of occupancy need to be addressed from the standpoint of energy efficiency. Specific provisions are provided for historic buildings.

Chapter 6 Referenced Standards. The code contains numerous references to standards that are used to regulate materials and methods of construction. Chapter 6 contains a comprehensive list of all standards that are referenced in the code. The standards are part of the code to the extent of the reference to the standard. Compliance with the referenced standard is necessary for compliance with this code. By providing specifically adopted standards, the construction and installation requirements necessary for compliance with the code can be readily determined. The basis for code compliance is, therefore, established and available on an equal basis to the code official, or other authority having jurisdiction, where one exists, contractor, designer and owner.

Chapter 6 is organized in a manner that makes it easy to locate specific standards. It lists all of the referenced standards, alphabetically, by acronym of the promulgating agency of the standard. Each agency's standards are then listed in either alphabetical or numeric order based upon the standard identification. The list also contains the title of the standard; the edition (date) of the standard referenced; any addenda included as part of the ICC adoption; and the section or sections of this code that reference the standard.

Marginal Markings

Solid vertical lines in the margins within the body of the code indicate a technical change from the requirements of the IECC 2015 and 2018 edition. Vermont specific additions and changes are designated through dotted lines in the margin. Deletion indicators in the form of an arrow ([RIGHT ARROW]) are provided in the margin where an entire section, paragraph, exception or table has been deleted or an item in a list of items or a table has been deleted.

Abbreviations and Notations

The following is a list of common abbreviations and units of measurement used in this code. Some of the abbreviations are for terms defined in Chapter 2. Others are terms used in various tables and text of the code.

Add, amend, delete and replace as follows:

CHAPTER 1 ADMINISTRATION

PART 1 - SCOPE AND APPLICATION

Section C101. Scope and General Requirements.

• delete and replace - C101.1 Title:

This code shall be known as the 2024 Commercial Building Energy Standards (CBES) of Vermont and shall be cited as such. It is referred to herein as "this code."

• delete and replace - C101.2 Scope:

This code applies to commercial buildings and the buildings' sites and provides the minimum energy-efficient requirements for the design and construction, and a plan for operation and maintenance of:

1. New buildings and their systems.

2. New portions of buildings and their systems.

3. New systems and equipment in existing buildings.

4. New stand-alone equipment or building systems specifically identified in the standard that are part of industrial or manufacturing processes.

Exception:

1. Farm Structures. This code shall not apply to farm structures as defined in 24 Vermont Statutes Annotated (V.S.A.) § 4413.

2. Process applications. This code shall not apply to manufacturing or industrial processes equipment that are not identified in this standard or are integral to equipment that is not identified in the standard.

• delete and replace - C101.5 Compliance.

Residential buildings shall meet the provisions of the 2024 Vermont Residential Building Energy Standards (RBES), and Commercial buildings shall meet the provisions of the 2024 Vermont Commercial Building Energy Standards (CBES).

Section C102. Alternative Materials, Design and Methods of Construction and Equipment.

• delete and replace - C102.1 General.

The provisions of this code are not intended to prevent the installation of any material or to prohibit any design or method of construction not specifically prescribed by this code, provided that any such alternative has been approved. An alternative material, design or method of construction shall be approved where the code official or other authority having jurisdiction finds that the proposed design is satisfactory and complies with the intent of the provisions of this code, and that the material, method or work offered is, for the purpose intended, not less than the equivalent of that prescribed in this code in quality, strength, effectiveness, fire resistance, durability and safety. Where the alternative material, design or method of construction is not approved, the code official or other authority having jurisdiction shall respond in writing, stating the reasons why the alternative was not approved.

delete and replace C102.1.1 Above code programs.

The code official or authority having jurisdiction shall be permitted to deem a national, state or local energy efficiency program an exceeding the energy efficiency required by this code.

Buildings approved in writing by such an energy efficiency program shall be considered to be in compliance with this code. The requirements identified as "mandatory" in Chapter 4 shall be met.

PART 2 ADMINISTRATION AND ENFORCEMENT

Section C103. Construction Documents.

• delete and replace - C103.1 General.

Where required construction documents and other supporting data shall be submitted in one or more sets with each application for a permit. The construction documents shall be prepared by a registered design professional where required by the statutes of the jurisdiction in which the project is to be constructed. Where special conditions exist, the code official or other authority having jurisdiction is authorized to require necessary construction documents to be prepared by a registered design professional.

Exception: The code official or other authority having jurisdiction is authorized to waive the requirements for construction documents or other supporting data if the code official or other authority having jurisdiction determines they are not necessary to confirm compliance with this code.

• delete and replace - C103.2 Information on construction documents.

Where required construction documents shall be drawn to scale on suitable material. Electronic media documents are permitted to be submitted where approved by the code official or other authority having jurisdiction. Construction documents shall be of sufficient clarity to indicate the location, nature and extent of the work proposed, and show in sufficient detail pertinent data and features of the building, systems and equipment as herein governed. Details shall include, but are not limited to, the following as applicable:

1. Energy compliance path.

2. Insulation materials and their R-values.

3. Fenestration U-factors and solar heat gain coefficients (SHGCs).

4. Area-weighted U-factor and solar heat gain coefficient (SHGC) calculations.

5. Design ambient temperatures.

6. Interior temperatures for heating and cooling modes.

7. Relative humidity setpoints.

8. Ventilation rates.

9. Mechanical system design criteria.

10. Mechanical and service water heating systems and equipment types, sizes and efficiencies.

11. Economizer description.

12. Equipment and system controls.

13. Fan motor horsepower (hp) and controls.

14. Duct sealing, duct and pipe insulation and location.

15. Lighting fixture schedule with wattage and control narrative.

16. Location of daylight zones on floor plans.

17. Air barrier and air sealing details, including the location of the air barrier, a diagram showing the building's pressure boundary in plan(s) and section(s), and a calculation of the area of the pressure boundary as specified in Section C402.4.1.3.

Mechanical equipment schedules shall be included in the submitted construction documents and shall include, but are not limited to, the following information:

1. Equipment efficiencies.

2. Fan and pump nameplate motor and brake horsepower.

3. Fan efficiency grade (FEG), where applicable.

4. Hydronic system (if applicable) supply and return water design temperatures for boilers and all terminal devices (e.g., baseboards, unit ventilators, etc.).

5. Steam system (if applicable) design pressure for boilers and all terminal devices.

Add C103.2.2 Electrification system. The construction documents shall provide details for additional electric infrastructure, including branch circuits, conduit, or pre-wiring, panel capacity, and electrical service capacity in compliance with the provisions of this code.

• delete and replace - C103.5 Retention of construction documents.

One set of approved construction documents shall be retained by the code official or other authority having jurisdiction for a period of not less than 180 days from date of completion of the permitted work, or as required by state or local laws.

• delete and replace - C103.6.2 Compliance documentation.

Energy code compliance documentation and supporting calculations shall be delivered in one document to the building owner as part of the project record documents or manuals, or as a standalone document. This document shall include the specific energy code edition utilized for compliance determination for each system, documentation demonstrating compliance with Section C303.1.3 for each fenestration product installed, and the interior lighting power compliance path, building area or space-by-space, used to calculate the lighting power allowance.

For projects complying with Item 1 of Section C401.2, the documentation shall include:

1. The envelope insulation compliance path.

2. All compliance calculations including those required by Sections C402.1.3, C403.8.1, C405.3 and C405.5.

CHAPTER 2 DEFINITIONS

Section C202. General Definitions.

add ALL-ELECTRIC BUILDING. A building that contains no combustion equipment, or plumbing for combustion equipment, installed within the building or building site.

add ANNUAL FUEL UTILIZATION EFFICIENCY (AFUE). Boiler and furnace efficiency measurement as the percentage of heating fuel that is effectively turned into usable energy (heat).

add APPLIANCE. A device or apparatus that is manufactured and designed to utilize energy and for which this code provides specific requirements.

delete and replace AUTHORITY HAVING JURISDICTION. The officer or other designated authority charged with the administration and enforcement of this code, or a duly authorized representative. For purposes of this code, neither the Vermont Public Service Department nor the Division of Fire Safety should be considered the authority having jurisdiction. Where there is conflict between rules adopted by the Division of Fire Safety and this code those adopted by the Division of Fire Safety have preemption over this code.

add AUTOMOBILE PARKING SPACE. A space within a building or private or public parking lot, exclusive of driveways, ramps, columns, office and work areas, for the parking of an automobile.

add BIOGAS. A mixture of hydrocarbons that is a gas at 60°F (15.5°C) and 1 atmosphere of pressure that is produced through the anaerobic digestion of organic matter.

add CARBON DIOXIDE EQUIVALENT (CO2e). A measure used to compare the impact of various greenhouse gases based on their global warming potential (GWP). CO2e approximates the warming effect of a unit mass of a given greenhouse gas relative to that of carbon dioxide (CO2).

delete and replace CLIMATE ZONE. A geographical region based on climatic criteria as specified in this code. Vermont is Climate Zone 6.

delete and replace CODE OFFICIAL. The officer or other designated authority charged with the administration and enforcement of this code, or a duly authorized representative. For purposes of this code, neither the Vermont Public Service Department nor the Division of Fire Safety should be considered the authority having jurisdiction. Where there is conflict between rules adopted by the Division of Fire Safety and this code those adopted by the Division of Fire Safety have preemption over this code.

add Combined Energy Efficiency Ratio (CEER). Window or room air conditioner efficiency measurement which combines the efficiency of the unit both in standby mode and in cooling mode.

add COMBUSTION EQUIPMENT. Any equipment or appliance used for space heating, service water heating, cooking, clothes drying and/or lighting that uses fuel gas or fuel oil.

delete and replace COMMERCIAL BUILDING ENERGY STANDARDS (CBES). The Vermont nonresidential Energy Code, based on the 2021 International Energy Conservation Code (IECC), but modified substantially.

add COMMERCIAL COOKING APPLIANCES. Appliances used in a commercial food service establishment for heating or cooking food, and which produce grease vapors, steam, fumes, smoke, or odors that are required to be removed through a local exhaust ventilation system. Such appliances include deep fat fryers, upright broilers, griddles, broilers, steam-jacketed kettles, hot- top ranges, under-fired broilers (charbroilers), ovens, barbecues, rotisseries, and similar appliances. For the purpose of this definition, a food service establishment shall include any building or a portion thereof used for the preparation and serving of food.

delete and replace COMPUTER ROOM. A room whose primary function is to house equipment for the processing and storage of electronic data which has a design total information technology equipment (ITE) equipment power density less than or equal to 20 watts per square foot (20 watts per 0.092 m) of conditioned area or a design total ITE equipment load less than or equal to 10 kW.

add DATA CENTER. A room or series of rooms that share data center systems, whose primary function is to house equipment for the processing and storage of electronic data and that has a design total ITE equipment power density exceeding 20 watts per square foot (20 watts per 0.092 m2) of conditioned area and a total design ITE equipment load greater than 10 kW.

add DATA CENTER SYSTEMS. HVAC systems and equipment, or portions thereof, used to provide cooling or ventilation in a data center.

delete and replace DEMAND RECIRCULATION WATER SYSTEM. A water distribution system where one or more pumps prime the service hot water piping with heated water upon a demand for hot water.

add DIRECT DIGITAL CONTROL (DDC). A type of control where controlled and monitored analog or binary data, such as temperature and contact closures, are converted to digital format for manipulation and calculations by a digital computer or microprocessor, then converted back to analog or binary form to control physical devices.

add ELECTRIC VEHICLE (EV). An automotive-type vehicle for on-road use, such as passenger automobiles, buses, trucks, vans, neighborhood electric vehicles, and electric motorcycles, primarily powered by an electric motor that draws current from a building electrical service, EVSE, a rechargeable storage battery, a fuel cell, a photovoltaic array, or another source of electric current.

add ELECTRIC VEHICLE CAPABLE SPACE (EV CAPABLE SPACE). A designated automobile parking space that is provided with all the requisite infrastructure in place within five feet to allow installation of electrical wiring and connection to power for EVSE

add ELECTRIC VEHICLE FAST CHARGER (EV FAST CHARGER). Also referred to as a Level 3 charger. An EV fast charger is an EVSE equipped with a direct-current (DC) plug for electric vehicle charging with either a CHAdeMO or SAE combined charging system (CCS) format connector. Other DC fast charging plug standards may be accepted as they are developed.

add ELECTRIC VEHICLE READY SPACE (EV READY SPACE). An automobile parking space that is provided with a branch circuit and either an outlet, junction box or receptacle, that will support an installed EVSE.

add ELECTRIC VEHICLE SUPPLY EQUIPMENT (EVSE). Equipment for plug-in power transfer including the ungrounded, grounded and equipment grounding conductors, and the electric vehicle connectors, attachment plugs, personal protection system and all other fittings, devices, power outlets or apparatus installed specifically for the purpose of transferring energy between the premises wiring and the electric vehicle.

add ELECTRIC VEHICLE SUPPLY EQUIPMENT INSTALLED SPACE (EVSE space). An automobile parking space that is provided with a dedicated EVSE connection.

add ENERGY EFFICIENCY RATIO (EER). Air handling unit measure of efficiency defined as the system output in Btu/h per watt of electrical energy input.

add ENTHALPY RECOVERY RATIO. Change in the enthalpy of the outdoor air supply divided by the difference between the outdoor air and entering exhaust air enthalpy, expressed as a percentage.

add ENVIRONMENTAL PRODUCT DECLARATION (EPD), TYPE III PRODUCT-SPECIFIC. An EPD is a document that describes the results of a life cycle assessment (LCA) for a material or product. While there are industry-specific EPDs, which average results across multiple product manufacturers, product-specific EPDs are the most thorough type of EPD. Type III, product- specific EPDs cover a single product from a manufacturer and are reviewed by a third-party entity. They conform to ISO 14025 and either EN 15804 or ISO 21930. Like all product specific EPDs, the scope must cover the product's life-cycle from cradle to gate.

add EQUIPMENT. Piping, ducts, vents, control devices and other components of systems other than appliances that are permanently installed and integrated to provide control of environmental conditions for buildings. This definition shall also include other systems specifically regulated in this code.

add FAN, EMBEDDED. A fan that is part of a manufactured assembly where the assembly includes functions other than air movement.

add FAN ARRAY. Multiple fans in parallel between two plenum sections in an air distribution system.

delete FAN EFFICIENCY GRADE (FEG). A numerical rating identifying the fan's aerodynamic ability to convert shaft power, or impeller power in the case of a direct-driven fan, to air power.

add FAN ENERGY INDEX (FEI). The ratio of the electric input power of a reference fan to the electric input power of the actual fan as calculated in accordance with AMCA 208.

add FAN NAMEPLATE ELECTRICAL INPUT POWER. The nominal electrical input power rating stamped on a fan assembly nameplate.

add FAN SYSTEM ELECTRICAL INPUT POWER. The sum of the fan electrical power of all fans that are required to operate at fan system design conditions to supply air from the heating or cooling source to the conditioned spaces and/or return it to the source or exhaust it to the outdoors.

add FAULT DETECTION AND DIAGNOSTICS (FDD) SYSTEM. A software platform that utilizes building analytic algorithms to convert data provided by sensors and devices to automatically identify faults in building systems and provide a prioritized list of actionable resolutions to those faults based on cost or energy avoidance, comfort and maintenance impact.

delete and replace FENESTRATION. Products classified as either skylights or vertical fenestration.

Skylights. Glass or other transparent or translucent glazing material installed at a slope of less than 60 degrees (1.05 rad) from horizontal, including unit skylights, tubular daylighting devices and glazing materials in solariums, sunrooms, roofs, greenhouses and sloped walls.

Vertical fenestration. Windows that are fixed or operable, opaque doors, glazed doors, glazed block and combination opaque and glazed doors composed of glass or other transparent or translucent glazing materials and installed at a slope of not less than 60 degrees (1.05 rad) from horizontal.

add FUEL GAS. A natural gas, manufactured gas, liquified petroleum gas or a mixture of these.

add FUEL OIL. Kerosene or any hydrocarbon oil having a flash point not less than 100°F (38°C).

add GARAGE DOOR. A large door that allows a vehicle to access the building or allows a shipping truck to load or unload.

delete and replace GENERAL LIGHTING. Interior lighting that provides a substantially uniform level of illumination throughout a space.

add GLOBAL WARMING POTENTIAL (GWP). GWP is an index for estimating the relative global warming contribution of atmospheric emissions of 1 kg of a particular greenhouse gas compared to emissions of 1 kg of CO2. The following GWP values are used based on a 100-year time horizon: 1 for CO2, < 10 for pentane (e.g., C5H12), and 1430 for R-134a (CH2FCF3).

add GLOBAL WARMING POTENTIAL (GWP) INTENSITY. For the purposes of this document, GWP intensity refers to the GWP impact from materials (kg CO2e) divided by the project's total conditioned floor area in square feet (ft2).

delete and replace GREENHOUSE. A structure or a thermally isolated area of a building that maintains a specialized sunlit environment exclusively used for, and essential to, the cultivation, protection or maintenance of plants. Greenhouses are those that are erected for a period of 180 days or more.

delete and replace GROSS AREA OF EXTERIOR WALLS. The normal projection of all exterior walls, including the edge area of above grade floors, the edge area of roof insulation, and the area of all windows and doors installed therein (see "Exterior wall").

add HEATING SEASONAL PERFORMANCE FACTOR (HSPF). Heat pump heating efficiency rating measured as the ratio of heat output over the heating season (in Btu) to electricity used (in watt-hours).

delete and replace HIGH-EFFICACY LIGHT SOURCES. Non-linear medium screw- and pin- base lamps with an efficacy of not less than 65 lumens per watt; or light fixtures of not less than 65 lumens per watt. In determining the number or percent of lamps, each replaceable lamp (or light string) connected to a permanently installed lighting fixture shall count as one lamp.

delete HUMIDISTAT. A regulatory device, actuated by changes in humidity, used for automatic control of relative humidity.

add INFORMATION TECHNOLOGY EQUIPMENT (ITE). Items including computers, data storage devices, servers and network and communication equipment.

add INTEGRATED ENERGY EFFICIENCY RATIO (IEER). Integrated efficiency value of a mechanical system operating at 100%, 75%, 50%, and 25% of full load capacity designed to reflect the efficiency at different load levels.

add INTERNAL CURTAIN SYSTEM. A system consisting of movable panels of fabric or plastic film used to cover and uncover the space enclosed in a greenhouse on a daily basis.

add LARGE-DIAMETER CEILING FAN. A ceiling fan that is greater than 7 feet (2134 mm) in diameter. These fans are sometimes referred to as High-Volume, Low-Speed (HVLS) fans.

delete and replace METAL BUILDING. A complete integrated set of mutually dependent components and assemblies that form a building, which consists of a steel-framed superstructure and metal exterior cladding.

add MIXED-FUEL BUILDING. A building that contains combustion equipment or includes piping for such equipment.

delete and replace NETWORKED GUESTROOM CONTROL SYSTEM. A control system, with access from the front desk or other central location associated with a Group R-1 building, that is capable of identifying the rented and unrented status of each guestroom according to a timed schedule, and is capable of controlling HVAC in each hotel and motel guestroom separately.

delete and replace OCCUPANCY CLASSIFICATIONS. Building occupancies shall be defined by the 2021 International Building Code, which is summarized here. Discrepancies in the summary or further clarifications shall defer to the International Building Code.

Assembly Group A is the occupancy group used for buildings that are for the gathering of persons for purposes such as civic, social or religious functions; recreation, food or drink consumption or awaiting transportation.

The first occupancy group is A-1. The group is for the production and viewing of the performing arts, motion pictures, or television and radio studios admitting an audience.

The next occupancy group is A-2. The group includes assembly uses intended for food and/or drink consumption, such as: banquet halls, casino gambling areas, night-clubs, restaurants, cafeterias, taverns, and bars.

Group A-3 includes assembly uses intended for worship, recreation or amusement and other assembly uses not classified elsewhere in Group A such as: community halls, courtrooms, gymnasiums, and waiting areas in transportation terminals.

Group A-4 includes assembly uses intended for viewing of indoor sporting events and activities with spectator seating.

Group A-5 includes assembly uses intended for participation in or viewing outdoor activities.

Business Group B is the occupancy group used for office, professional or service-type transactions, including storage or records and accounts.

Educational Group E is the occupancy group used by six or more persons at any one time for educational purposes through the 12th grade.

Factory Industrial Group F is the occupancy group used for disassembling, fabricating, finishing, manufacturing, packaging, repair or processing operation that are not classified as Group H or Group S.

High-hazard Group H is the occupancy group used for manufacturing, processing, generation or storage of materials that constitute a physical or health hazard.

Institutional Group I is the occupancy group used for more than 16 persons, excluding staff, who reside on a 24-hour basis in a supervised environment and receive custodial care.

Mercantile Group M is the occupancy group used for the display and sale of merchandise, and involves stocks of goods, wares or merchandise.

Residential Group R is the occupancy group used for buildings that include sleeping rooms and are not institutional. There are four different occupancy groups within R.

The first occupancy group is R-1. This group is for transient uses like hotels, motels and boarding houses.

Group R-2 is occupancies containing sleeping units or more than two dwelling units where the occupants are primarily permanent. This includes apartments, dormitories, fraternities and sororities. It also includes vacation timeshares (with more than two units) and convents and monasteries. Boarding houses or congregate living facilities with 16 or fewer occupants go into Group R-3.

Group R-3 is for permanent occupancies that are not R-1, R-2, or R-4.

Group R-4 is for occupancies for more than five but not more than 16 persons, excluding staff, who reside on a 24-hour basis in a supervised residential environment and receive custodial care.

Storage Group S is the occupancy group used for storage that is not classified as a hazardous occupancy.

delete and replace ON-SITE RENEWABLE ENERGY. Energy from renewable energy resources harvested at the building project site.

delete and replace RENEWABLE ENERGY RESOURCES. Energy produced using a technology that relies on a resource that is being consumed at a harvest rate at or below its natural regeneration rate including, but not limited to, solar hot water, solar hot air, solar photovoltaics, wind, and hydro.

1. Methane gas and other flammable gases produced by the decay of sewage treatment plant wastes or landfill wastes and anaerobic digestion of agricultural products, byproducts, or wastes shall be considered renewable energy resources, but no form of solid waste, other than agricultural or silvicultural waste, shall be considered renewable.

2. The only portion of electricity produced by a system of generating resources that shall be considered renewable is that portion generated by a technology that qualifies as renewable.

3. The following fuels shall not be considered renewable energy supplies: coal, oil, propane, and natural gas.

4. Biomass is considered renewable.

delete and replace RESIDENTIAL BUILDING ENERGY STANDARDS (RBES). The Vermont Residential Energy Code based on the 2015 International Energy Conservation Code with 2018, 2020, and 2024 additions.

add SEASONAL ENERGY EFFICIENCY RATIO (SEER). Air conditioner efficiency rating, measured as the ratio of cooling output over a typical cooling season (in Btuh), divided by the provided electrical energy (in watt-hours).

delete and replace SEMI-CONDITIONED SPACE. An enclosed space within a building that is not a conditioned space, but is directly or indirectly mechanically heated or cooled.

add SOLAR-READY ZONE. A section of sections of the roof or building overhang designated and reserved for the future installation of a solar photovoltaic or solar thermal system.

add TESTING UNIT ENCLOSURE AREA. The area sum of all the boundary surfaces that define the dwelling unit, sleeping unit or occupiable conditioned space including top/ceiling, bottom/floor and all side walls. This does not include interior partition walls within the dwelling unit, sleeping unit, or occupiable conditioned space. Wall height shall be measured from the finished floor of the conditioned space to the finished floor or roof/ceiling air barrier above.

add THERMAL DISTRIBUTION EFFICIENCY (TDE). The resistance to changes in air heat as air is conveyed through a distance of air duct. TDE is a heat loss calculation evaluating the difference in the heat of the air between the air duct inlet and outlet caused by differences in temperatures between the air in the duct and the duct material. TDE is expressed as a percent difference between the inlet and outlet heat in the duct.

add TYPE III PRODUCT-SPECIFIC ENVIRONMENTAL PRODUCT DECLARATION (EPD). See ENVIRONMENTAL PRODUCT DECLARATION, TYPE III PRODUCT-SPECIFIC.

add VEGETATIVE ROOF. An assembly of interacting components designed to waterproof a building's top surface that includes, by design, vegetation and related landscape elements.

add VISIBLE TRANSMITTANCE, ANNUAL [VT annual]. The ratio of visible light entering the space through the fenestration product assembly to the incident visible light during the course of a year, which includes the effects of glazing material, frame, and light well or tubular conduit, and is expressed as a number between 0 and 1.

delete and replace WALL, ABOVE-GRADE. A wall associated with the building thermal envelope that is more than 15 percent above grade and is on the exterior of the building or any wall that is associated with the building thermal envelope that is not on the exterior of the building. This includes, but is not limited to, between-floor spandrels, peripheral edges of floors, roof knee walls, dormer walls, gable end walls, walls enclosing a mansard roof and skylight shafts.

CHAPTER 3 [CE]

GENERAL REQUIREMENTS

Section C303. Materials, Systems and Equipment.

• delete and replace - C303.1.2 Insulation mark installation.

Insulating materials shall be installed such that the manufacturer's R-value mark is readily observable upon inspection. For insulation materials that are installed without an observable manufacturer's R-value mark, such as blown or draped products, an insulation certificate complying with Section C303.1.1 shall be left immediately after installation by the installer, in a conspicuous location within the building, to certify the installed R-value of the insulation material.

• delete and replace -- TABLE C303.1.3(2)

TABLE C303.1.3(2)

DEFAULT OPAQUE DOOR U -FACTORS

CHAPTER 4 COMMERCIAL ENERGY EFFICIENCY

Section C401. General.

• delete and replace -- C401.2 Application.

Commercial buildings shall comply with Section C401.2.1 or C401.2.2.

• delete and replace -- C401.2.1 CBES Prescriptive Compliance.

The Prescriptive Compliance option requires compliance with Sections C402 through C407. Dwelling units and sleeping units in Group R-2 buildings without systems serving multiple units shall be deemed to be in compliance, provided that they comply with Section R406 of RBES.

• delete and replace -- C401.2.2 ASHRAE 90.1.

Commercial buildings shall comply with the requirements of ANSI/ASHRAE/IESNA 90.1-2019. New buildings using ANSI/ASHRAE/IESNA 90.1-2019 compliance paths (a) or (b) (see ANSI/ASHRAE/IESNA 90.1-2019 section 4.2.1.1 New Buildings) shall comply with Section C406 in the 2024 CBES. Commercial building projects utilizing the alternative compliance path of ANSI/ASHRAE/IESNA 90.1-2019 must follow all applicable provisions listed in Section C401.2.2.1.

• add -- C401.2.2.1 Applicable provisions to Standard 90.1-2019.

1. All instances of the term building official in ASHRAE/IESNA 90.1-2019 shall be replaced with the terms code official or authority having jurisdiction.

2. ASHRAE/IESNA 90.1-2019 Section 4.2.1.1 New Buildings. Delete the equation for Performance Cost Index Target (PCI) and replace with:

PCI= [BPF x (BBUEC + BBREC)]/BBP.

• delete -- Table 4.2.1.1 Building Performance Factor (BPF) and replace with:

TABLE 4.2.1.1 Building Performance Factor (BPF)

3. ASHRAE/IESNA 90.1-2019 Section 5.1.4.1 United States Locations. Delete the exception clause and replace with the following:

a. Adjustments may be made only in the following cases:

a. Winter heating design temperatures for projects either:

i. Located at an elevation of 1,500 feet or higher.

ii. Located in Caledonia, Essex or Orleans counties.

iii. Adjustments shall be made as listed in the National Climate Data Center for the specific weather station: http://www.ncdc.noaa.gov/cdo-web/.

b. As approved by the code official or authority having jurisdiction.

4. ASHRAE/IESNA 90.1-2019 Section 5 Building Envelope. All envelope requirements shall comply with the following tables in the 2024 Vermont Commercial Building Energy Standards(CBES):

i. Table C402.1(2) and Table C402.1(3), Building Envelope Requirements-- Opaque Assemblies and Elements. Any spaces that qualify as Semiheated in ASHRAE/IESNA 90.1-2019 need only comply with the Semiconditioned requirement in Table C402.1(2) and Table C402.1(3).

ii. Table C402.1(4), Building Envelope Requirements--Metal Building Assembly Descriptions.

iii. Table C402.3, Building Envelope Fenestration Maximum U-Factor and SHGC Requirements.

5. ASHRAE/IESNA 90.1-2019 Section 5.4.3 Air Leakage. Delete section in its entirety and replace with Section C402.4 Air leakage--thermal envelope of the 2024 Vermont CBES.

6. ASHRAE/IESNA 90.1-2019 Section 5.5.3.1 Roof Insulation. Delete section in its entirety and replace with Section C402.2.1 Roof assembly of the 2024 Vermont CBES.

7. ASHRAE/IESNA 90.1-2019 Section 5.5.3.3 Below-Grade Wall Insulation. Delete section in its entirety and replace with Section C402.2.3 Below-grade walls of the 2024 Vermont CBES.

8. ASHRAE/IESNA 90.1-2019 Section 5.5.3.5 Slab-on-Grade Floor Insulation. Add to the end of this section the requirements of section C402.2.6 Slabs-on-grade perimeter insulation of the 2024 Vermont CBES.

9. ASHRAE/IESNA 90.1-2019 Section 6.2 Compliance Path(s). Add new section as follows:

a. Section 6.2.3 Electric Resistance Space Heating. Building heating with electrical resistance units, including baseboard radiation, heat pump reheat coils, duct coils, boilers, domestic hot water heaters, and coils in terminal units and air systems is prohibited.

Exceptions to 6.2.3:

a. Areas, such as stairways, that are not permitted to be penetrated with piping or duct and no other method of heating is possible.

b. Replacement of existing electrical resistance unit.

c. Special conditions of occupancy or use that require electrical resistance heat to maintain health, safety or environmental conditions.

d. Limited areas where a practical application of resistance electrical heat is demonstrated (e.g., small interior space, such as a rest room, which is distant from the distribution system, hazardous material storerooms, stairwell or other means of emergency egress).

e. Domestic hot water heaters less than or equal to 7.5 kW in total unit input capacity.

f. Multifamily buildings with heating loads less than or equal to 6.0 Btu/hour/square foot at design temperature.

g. Cold-Climate Heat Pump where:

a. the full heating demand can be met with the heat pump at an outside air temperature of 5°F (-15°C).

b. the building thermal envelope shall be tested in accordance with ASTM E779 at a pressure differential of 0.3 inch water gauge (75 Pa) and deemed to comply with the provisions of Section C402.4.1 when the tested air leakage rate of the building thermal envelope is not greater than 0.15 cfm/ft (including the areas of the slab and below grade walls).

Buildings served by the City of Burlington Electric (BED) must also receive approval from BED before installing electric resistance heating equipment.

10. ASHRAE/IESNA 90.1-2019 Section 6.3.2(e) Criteria. Delete "an electric resistance heater."

11. ASHRAE/IESNA 90.1-2019 Section 6.4.3.5 Heat Pump Auxiliary Heat Control. Delete section in its entirety and replace with Section C403.4.1.1 Heat pump supplementary heat of the 2024 Vermont CBES.

12. ASHRAE/IESNA 90.1-2019 Section 6.4.3.8 Ventilation Controls for High-Occupancy Areas. Add exception (6): Ventilation needs for process loads.

13. ASHRAE/IESNA 90.1-2019 Section 6.4.3.9 Heated or Cooled Vestibules. Delete section in its entirety and replace with Section C403.4.1.4 Duct and plenum insulation and sealing of the 2024 Vermont CBES.

14. ASHRAE/IESNA 90.1-2019 Section 6.4.4.1.2 Duct and Plenum Insulation. Delete section in its entirety and replace with Section C403.11.1 Duct and plenum insulation and sealing of the 2024 Vermont CBES.

15. Add new Section 6.4.7 to ASHRAE/IESNA 90.1-2019, titled Economizer Fault Detection and Diagnostics (FDD). Insert Section C403.5.5 Economizer fault detection and diagnostics (FDD) of the 2024 Vermont CBES.

16. ASHRAE/IESNA 90.1-2019 Section 6.5.1 Economizers. Delete section in its entirety and replace with Section C403.5 Economizers of the 2023 Vermont CBES.

17. ASHRAE/IESNA 90.1-2019 Tables 6.5.6.1-1 and 6.5.6.1-2 Exhaust Air Energy Recovery Requirements for Ventilation Systems. Both tables shall be greater than or equal to 3,000 hours per year rather than 8,000 hours.

18. ASHRAE/IESNA 90.1-2019 Tables 6.5.6.1-1 and Table 6.5.6.1-2 Exhaust Air Energy Recovery Requirements, delete requirement for systems with [greater than or equal] 10% and < 20% outdoor air (second column of tables).

19. ASHRAE/IESNA 90.1-2019 Section 6.5.6.2 Heat Recovery for Service Water Heating. Add exception (3): If compliance with Section 6.5.6.2 will be detrimental to chiller operating efficiency due to conflicts with optimized chiller head pressure control.

20. ASHRAE/IESNA 90.1-2019 Section 6.7.2.4 System Commissioning. Delete section in its entirety and replace with Section C407 System Commissioning of the 2024 Vermont CBES.

21. ASHRAE/IESNA 90.1-2019 Section 7.1 General. Add new section as follows:

a. Section 7.1.1.4 Electrical Water Heating Limitation. Individual electric service water heating units shall be limited to a maximum of 7.5 kW total power input.

Exception: Instantaneous electric water heaters used to serve emergency showers and emergency eye wash stations.

22. ASHRAE/IESNA 90.1-2019 Table 7.8 Performance Requirements for Water Heating Equipment.

a. Change first row (Electric tabletop water heaters) size category to < 7.5 kW.

b. Change second row (Electric water heaters) size category to < 7.5 kW.

c. Delete entire third row for electric water heaters > 12 kW.

23. ASHRAE/IESNA 90.1-2019 Section 9 Lighting. All lighting power density (LPD) requirements shall comply with the following tables in the 2024 Vermont Commercial Building Energy Standards (CBES):

i. Table C405.3.2(1), Interior Lighting Power Allowances: Building Area Method.

ii. Table C405.3.2(2), Interior Lighting Power Allowances: Space-by-Space Method.

iii. Table C405.4.2(2), Individual Lighting Power Allowances for Building Exteriors. Note that Vermont does not have any exterior lighting zone 4 areas.

Exception: Exterior lighting zone 0 shall follow LPD requirements given by ASHRAE/IESNA 90.1-2019 Table 9.4.4-2.

24. ASHRAE/IESNA 90.1-2019 Section 9.4.1.3 Special Applications. At the end of the section add the following wording:

d. Luminaires providing means of egress illumination where the means of egress shall be illuminated at all times the room or space is occupied shall be controlled by occupancy sensors, or a signal from another building control system, that automatically reduces the lighting power by at least 50% when unoccupied for a period longer than 15 minutes.

Exceptions:

1. Means of egress illumination that does not exceed 0.02 watts per square foot of building area is exempt from this requirement.

2. Emergency lighting designated to meet Section 1008.3 of the International Building Code.

3. ASHRAE/IESNA 90.1-2019 Section 9.4.1.4 Exterior Lighting Control. Add the following requirement:

e. Exterior lighting shall be full cut off fixtures, limiting the light output to less than 10% at and below 10 degrees below the horizontal. Fixtures shall be independently certified by manufacturer as full cut off or meet the definition of a fully shielded light fixture.

26. ASHRAE/IESNA 90.1-2019 Section 9.4.4 Dwelling Units. Delete section in its entirety and replace with: Not less than 90% of the permanently installed lighting fixtures shall use lamps with an efficacy of at least 65 lm/W or have a total luminaire efficacy of at least 55 lm/W.

27. ASHRAE/IESNA 90.1-2019 Section 9.6.2 Additional Interior Lighting Power. Amend the exception in part (a) to read that the power shall not exceed 0.6 W/ft2 of such spaces instead of 0.75 W/ft2. In part (b), delete the equation for Additional Interior Lighting Power Allowance and replace with:

Additional interior lighting power allowance = 250 W + (Retail Area 1 x 0.20 W/ft2) + (Retail Area 2 x 0.20 W/ft2) + (Retail Area 3 x 0.50 W/ft2) + (Retail Area 4 x 0.90 W/ft2)

28. ASHRAE/IESNA 90.1-2019 Section 10.4 Mandatory Provisions. Add the following sections:

i. 10.4.6, Renewable energy systems, which will meet the requirements of Section C405.10 Renewable energy systems in the 2024 Vermont CBES.

ii. 10.4.7 Electric Vehicle Charging Stations, which will meet the requirements of Section C405.11 Electric Vehicle Charging Stations in the 2024 Vermont CBES.

• delete and replace -- C401.3 CBES Certificate and Affidavits.

30. V.S.A. § 53 requires certification that both the design and the construction of a commercial building is in compliance with the CBES. Copies of the CBES Certificate and Affidavits are available on the Department of Public Service website at https://publicservice.vermont.gov/energy_efficiency/cbes.

Certification shall be issued by an approved party completing and signing a certificate and affixing it permanently on a wall in the space where the space conditioning equipment is located, in the interior space where the electrical service panel is located, or in a visible location in the immediate vicinity of one of these areas. If located on an electrical panel, the certificate shall not cover or obstruct the visibility of the circuit directory label, service disconnect label or other required labels. Copies of the signed certification documents shall be included in the construction files for the project, shall be sent to the local town clerk for recording in the land records, and shall be sent to the Vermont Public Service Department. The certificate shall include the following:

1. Compliance method

2. Thermal envelope details including:

a. R-values of insulation installed in or on ceilings, roofs, walls, foundations and slabs, 101229848 basement walls, crawl space walls and floors and ducts outside conditioned spaces.

b. U-factors and solar heat gain coefficients (SHGC) of fenestrations.

3. Results from any building envelope air leakage testing performed on the building.

4. An indication of the solar-ready zone and other requirements of Section C402.5.

Where there is more than one value for any component of the building envelope, the certificate shall indicate the area-weighted average value where available. If the area-weighted average is not available, the certificate shall list each value that applies to 10 percent or more of the total component area.

Section C402. Building Envelope Requirements.

• delete and replace -- C402.1 General.

In addition to the envelope requirements of Section C402, projects must achieve the required number of credits based on building occupancy group as outlined in Table C406.1.1 and Table C406.1.2. To achieve the required credits, envelope enhancements may be needed..

The requirements of C402 that may be affected and the corresponding C406 references are summarized in Table C402.1(1). For a full list of potential measures See Table C406.2.1 and Table C406.3.1.

Table C402.1(1): C406 MEASURES AFFECTING BUILDING ENVELOPE

Building thermal envelope assemblies for buildings that are intended to comply with the code on a prescriptive basis in accordance with the compliance path described in Item 1 of Section C401.2, shall comply with the following:

1. The opaque portions of the building thermal envelope shall comply with the specific insulation requirements of Section C402.2 and the thermal requirements of either the R- value-based method of Section C402.1.1; the U-, C- and F-factor-based method of Section C402.1.2; the component performance alternative of Section C402.1.3; or the building above-grade performance alternative of Section C402.1.4. Building assemblies between conditioned and semi-conditioned spaces shall comply with the semi- conditioned requirements.

2. Fenestration in building envelope assemblies shall comply with Section C402.3.

Exception: Semi-conditioned spaces do not have fenestration requirements.

3. Air leakage of building envelope assemblies shall comply with Section C402.4. Buildings with both conditioned and semi-conditioned spaces shall independently comply with the requirements of Section C402.4.

4. Solar readiness of building envelope assemblies shall comply with Section C402.5.

Alternatively, where buildings have a vertical fenestration area or skylight area exceeding that allowed in Section C402.3, the building and building thermal envelope shall comply with Section C401.2, Item 2.

Walk-in coolers, walk-in freezers, refrigerated warehouse coolers and refrigerated warehouse freezers shall comply with Section C403.10.1.

• delete -- TABLE C402.1(1) and replace TABLE C402.1(2).

TABLE C402.1(2) CONDITIONED SPACE BUILDING ENVELOPE REQUIREMENTS -- OPAQUE ASSEMBLIES AND ELEMENTSa,b

• add -- TABLE C402.1(3).

TABLE C402.1(3)

SEMI-CONDITIONED SPACE BUILDING ENVELOPE REQUIREMENTS--OPAQUE ASSEMBLIES AND ELEMENTSa,b

• add -- TABLE C402.1(2) and replace TABLE C402.1(4)

TABLE C402.1(4)

BUILDING ENVELOPE REQUIREMENTS--METAL BUILDING ASSEMBLY DESCRIPTIONS

• delete -- TABLE C402.1(3) and replace TABLE C402.1(5)

TABLE C402.1(5)

ASSEMBLY U-FACTORS FOR METAL BUILDING ROOFS

• delete -- TABLE C402.1(4) and replace TABLE C402.1(6)

TABLE C402.1(6)

ASSEMBLY U-FACTORS FOR ATTIC ROOFS WITH WOOD JOISTS

• renumber -- TABLE C402.1(5) to TABLE C402.1(7)

• renumber -- TABLE C402.1(6) to TABLE C402.1(8)

• delete -- TABLE C402.1(7) and replace TABLE C402.1(9)

TABLE C402.1(9)

ASSEMBLY U-FACTORS FOR WOOD-FRAMED WALLS

Note: Lightly shaded areas comply with building occupancies other than conditioned R-2 spaces. Darkly shaded areas comply with minimum requirements for semi-conditioned spaces but not conditioned spaces.

• delete and replace -- C402.1.1 Insulation component R-value-based method.

Building thermal envelope opaque assemblies shall comply with the requirements of Sections C402.2 and C402.3. For opaque portions of the building thermal envelope intended to comply on an insulation component R-value basis, the R-values for cavity insulation and continuous insulation shall be not less than that specified in the "Minimum R-values" columns of Table C402.1(2) and Table C402.1(3). Where cavity insulation is installed in multiple layers, the cavity insulation R-values shall be summed to determine compliance with the cavity insulation R- value requirements. Where continuous insulation is installed in multiple layers, the continuous insulation R-values shall be summed to determine compliance with the continuous insulation R-value requirements. Cavity insulation R-values shall not be used to determine compliance with the continuous insulation R-value requirements in Table C402.1(2) and Table C402.1(3). Commercial buildings or portions of commercial buildings enclosing conditioned spaces shall use the R-values from the "Conditioned Space" Table C402.1(2). Commercial buildings or portions of commercial buildings enclosing semi-conditioned spaces shall use the R-values from the "Semi-conditioned Space" Table C402.1(3). Walls between conditioned and semi- conditioned spaces shall use the R-values from the "Semi-conditioned Space" Table C402.1(3).

• delete and replace -- C402.1.2 Assembly U-factor, C-factor or F-factor-based method.

Building thermal envelope opaque assemblies shall meet the requirements of Sections C402.2 and C402.3. Building thermal envelope opaque assemblies intended to comply on an assembly U-, C- or F-factor basis shall have a U-, C- or F-factor not greater than that specified in the "Maximum Overall U-factor" columns of Table C402.1(2) and Table C402.1(3). Commercial buildings or portions of commercial buildings enclosing conditioned spaces shall use the U-, C- or F-factor from the "Conditioned Space" Table C402.1(2). Commercial buildings or portions of commercial buildings enclosing semi-conditioned spaces shall use the U-, C- or F-factor from the "Semi-conditioned Space" Table C402.1(3). Walls between conditioned and semi-conditioned spaces shall use the R-values from the "Semi-conditioned Space" Table C402.1(3).

• add -- C402.1.2.1 Roof/ceiling assembly.

The maximum, roof/ceiling assembly U-factor shall not exceed that specified in Table C402.1(2) and Table C402.1(3) based on construction materials used in the roof/ceiling assembly.

• add -- C402.1.2.1.1 Tapered, above-deck insulation based on thickness.

Where used as a component of a maximum roof/ceiling assembly U-factor calculation, the sloped roof insulation R-value contribution to that calculation shall use the average thickness in inches (mm) along with the material R-value-per-inch (per-mm) solely for U-factor compliance as prescribed in Section C402.1.1.

• add -- C402.1.2.1.2 Suspended ceilings.

Insulation installed on suspended ceilings having removable ceiling tiles shall not be considered part of the assembly U-factor of the roof/ceiling construction.

-add -- C402.1.2.1.3 Joints staggered.

Continuous insulation board shall be installed in not less than two layers, and the edge joints between each layer of insulation shall be staggered, except where insulation tapers to the roof deck at a gutter edge, roof drain or scupper.

-delete and replace -- C402.1.3 Component performance alternative.

Building envelope values and fenestration areas determined in accordance with Equation 4-1 shall be an alternative to compliance with the U-, F- and C-factors in Tables C402.1(2) and Table C402.1(3) and C402.3 and the maximum allowable fenestration areas in Section C402.3.1. Fenestration shall meet the applicable SHGC requirements of Section C402.3.3.

A + B + C + D + E [less than or equal] Zero (Equation 4-1)

where:

Where the proposed vertical glazing area is less than or equal to the maximum vertical glazing area allowed by Section C402.3.1, the value of D (Excess Vertical Glazing Value) shall be zero. Otherwise:

Where the proposed skylight area is less than or equal to the skylight area allowed by Section C402.3.1, the value of E (Excess Skylight Value) shall be zero. Otherwise:

-delete and replace -- C402.1.4 Building above-grade performance alternative.

Above-grade building envelope values determined in accordance with Equation 4-2 shall be an alternative to compliance with the U-factors in Tables C402.1(2) and Table C402.1(3) and C402.3 and the maximum allowable fenestration areas in Section C402.3.1. Below-grade walls, floors, and slabs shall meet the applicable requirements of Section C402.1.1 or C402.1.2. Fenestration shall meet the applicable SHGC requirements of Section C402.3.3.

UA-Total/Area [less than or equal] 0.032 (Equation 4-2)

where:

-delete and replace -- C402.2 Specific building thermal envelope insulation requirements.

Insulation in building thermal envelope opaque assemblies shall comply with Sections C402.2.1 through C402.2.8 and Table C402.1(2) and Table C402.1(3).

-delete and replace -- C402.2.1 Roof assembly.

The minimum thermal resistance (R-value) of the insulating material installed either between the roof framing or continuously on the roof assembly shall be as specified in Table C402.1(2) and Table C402.1(3), based on construction materials used in the roof assembly.

-add -- C402.2.1.1 Tapered, above-deck insulation based on thickness.

Where used as a component of a roof/ceiling assembly R-value calculation, the sloped roof insulation R- value contribution to that calculation shall use the average thickness in inches (mm) along with the material R-value-per-inch (per-mm) solely for R-value compliance as prescribed in Section 402.1.3.

-add -- C402.2.1.2 Minimum insulation, lowest point.

The minimum insulation of above deck roof insulation at its lowest point, gutter edge, roof drain or scupper, shall be not less than R-12.

-add -- C402.2.1.3 Suspended ceilings.

Insulation installed on suspended ceilings having removable ceiling tiles shall not be considered part of the minimum thermal resistance (R- value) of roof insulation in roof/ceiling construction.

-add -- C402.2.1.4 Joints staggered.

Continuous insulation board shall be installed in not less than two layers and the edge joints between each layer of insulation shall be staggered, except where insulation tapers to the roof deck at a gutter edge, roof drain or scupper.

-add -- C402.2.1.5 Mechanical curbs.

The minimum insulation of abovedeck roof insulation at the location of a mechanical curb, shall be not less than R-12.

-add -- C402.2.1.6 Skylight curbs.

Skylight curbs shall be insulated to the level of roofs with insulation entirely above the deck or R-10, whichever is less.

Exception: Unit skylight curbs included as a component of a skylight listed and labeled in accordance with NFRC 100 shall not be required to be insulated.

-delete and replace -- C402.2.2 Above-grade walls.

The minimum thermal resistance (R-value) of materials installed in the wall cavity between framing members and continuously on the walls shall be as specified in Table C402.1(2) and Table C402.1(3), based on framing type and construction materials used in the wall assembly. The R-value of integral insulation installed in concrete masonry units shall not be used in determining compliance with Table C402.1(2) and Table C402.1(3) except as otherwise noted in the table. In determining compliance with Table C402.1(2) and Table C402.1(3), the use of the U-factor of concrete masonry units with integral insulation shall be permitted. "Mass walls" where used as a component in the thermal envelope of a building shall comply with one of the following:

1. Weigh not less than 35 pounds per square foot (171 kg/m²) of wall surface area.

2. Weigh not less than 25 pounds per square foot (122 kg/m²) of wall surface area

where the material weight is not more than 120 pcf (1900 kg/m³).

3. Have a heat capacity exceeding 7 Btu/ft² * °F (144 kJ/m² * K).

4. Have a heat capacity exceeding 5 Btu/ft² * °F (103 kJ/m² * K), where the material weight is not more than 120 pcf (1900 kg/m³).

-delete and replace -- C402.2.3 Floors.

The thermal properties (component R-values or assembly U-, C- or F-factors) of floor assemblies over outdoor air or unconditioned space shall be as specified in Table C402.1(2) and Table C402.1(3), based on construction materials used in the floor assembly. Floor framing cavity insulation or structural slab insulation shall be installed to maintain permanent contact with the underside of the subfloor decking or structural slabs.

"Mass floors" where used as a component of the thermal envelope of a building shall provide one of the following weights:

1. 35 pounds per square foot (171 kg/m²) of floor surface area.

2. 25 pounds per square foot (122 kg/m²) of floor surface area where the material weight is not more than 120 pounds per cubic foot. (1923 kg/m³)

Exceptions:

1. The floor framing cavity insulation or structural slab insulation shall be permitted to be in contact with the top side of sheathing or continuous insulation installed on the bottom side of floor assemblies where combined with insulation that meets or exceeds the minimum U-value in Table C402.1(2) and Table C402.1(3) for "Metal framed" or "Wood framed and other" values for "Walls, Above Grade" and extends from the bottom to the top of all perimeter floor framing or floor assembly members.

2. Insulation applied to the underside of concrete floor slabs shall be permitted an airspace of not more than 1 inch (25 mm) where it turns up and is in contact with the underside of the floor under walls associated with the building thermal envelope.

-delete and replace -- C402.2.4 Slabs-on-grade.

The minimum thermal resistance (R-value) of the insulation for unheated or heated slab-on- grade floors designed in accordance with the R-value method of Section C402.1.1 shall be as specified in Table C402.1(2) and Table C402.1(3).

-add -- C402.2.4.1 Insulation installation.

Where installed, the perimeter insulation shall be placed on the outside of the foundation or on the inside of the foundation wall. The perimeter insulation shall extend downward from the top of the slab for the minimum distance shown in the table or to the top of the footing, whichever is less, or downward to not less than the bottom of the slab and then horizontally to the interior or exterior for the total distance shown in the table. Insulation extending away from the building shall be protected by pavement or by not less than of 10 inches (254 mm) of soil. Where installed, full slab insulation shall be continuous under the entire area of the slab-on-grade floor, except at structural column locations and service penetrations. Insulation required at the heated slab perimeter shall not be required to extend below the bottom of the heated slab and shall be continuous with the full slab insulation.

Exception: Where the slab-on-grade floor is greater than 24 inches (61 mm) below the finished exterior grade, perimeter insulation is not required.

delete and replace C402.2.5 Below-grade walls.

The C-factor for the below-grade exterior walls shall be in accordance with Table C402.1(2) and Table C402.1(3). The R-value of the insulating material installed continuously within or on the below-grade exterior walls of the building envelope shall be in accordance with Table C402.1(2) and Table C402.1(3). The C-factor or R-value required shall extend to a depth of not less than 10 feet (3048 mm) below the outside finished ground level, or to the level of the lowest floor of the conditioned space enclosed by the below-grade wall, whichever is less.

delete and replace C402.2.6 Insulation of radiant heating systems.

Radiant heating system panels, and their associated components that are installed in interior or exterior assemblies shall be insulated to an R-value of not less than R-3.5 on all surfaces not facing the space being heated. Radiant heating system panels that are installed in the building thermal envelope shall be separated from the exterior of the building or unconditioned or exempt spaces by not less than the R-value of insulation installed in the opaque assembly in which they are installed or the assembly shall comply with Section C402.1.2.

Exception: Heated slabs on grade insulated in accordance with the "Heated slabs" row of Table C402.1(2) and Table C402.1(3).

delete and replace C402.2.7 Airspaces.

Where the R-value of an airspace is used for compliance in accordance with Section C402.1, the airspace shall be enclosed in an unventilated cavity constructed to minimize airflow into and out of the enclosed airspace. Airflow shall be deemed minimized where the enclosed airspace is located on the interior side of the continuous air barrier and is bounded on all sides by building components.

Exception: The thermal resistance of airspaces located on the exterior side of the continuous air barrier and adjacent to and behind the exterior wall-covering material shall be determined in accordance with ASTM C1363 modified with an airflow entering the bottom and exiting the top of the airspace at an air movement rate of not less than 70 mm/second.

delete and replace C402.3 Fenestration.

Fenestration shall comply with Sections C402.3.1 through C402.3.5 and Table C402.3. Daylight responsive controls shall comply with this section and Section C405.2.3.1.

delete and replace TABLE C402.3

TABLE C402.3

BUILDING ENVELOPE FENESTRATION MAXIMUM U-FACTOR AND SHGC REQUIREMENTS

NR = No requirement, PF = Projection factor.

delete and replace C402.3.1.1 Increased vertical fenestration area with daylight responsive controls (see Section C405.2.3).

Not more than 40 percent of the gross above-grade wall area shall be vertical fenestration, provided that all of the following requirements are met:

1. In buildings not greater than two stories above grade, not less than 50 percent of the net floor area is within a daylight zone.

2. In buildings three or more stories above grade, not less than 25 percent of the net floor area is within a daylight zone.

3. Daylight responsive controls are installed in daylight zones.

4. Visible transmittance (VT) of vertical fenestration is not less than 1.1 times solar heat gain coefficient (SHGC).

Exception: Fenestration that is outside the scope of NFRC 200 is not required to comply with Item 4.

delete and replace C402.3.1.2 Increased skylight area with daylight responsive controls.

The skylight area shall be not more than 6 percent of the roof area provided that daylight responsive controls are installed in toplit daylight zones.

delete and replace C402.3.2 Minimum skylight fenestration area.

Skylights shall be provided in enclosed spaces greater than 2,500 square feet (232 m) in floor area, directly under a roof with not less than 75 percent of the ceiling area with a ceiling height greater than 15 feet (4572 mm), and used as an office, lobby, atrium, concourse, corridor, storage space, gymnasium/exercise center, convention center, automotive service area, space where manufacturing occurs, nonrefrigerated warehouse, retail store, distribution/sorting area, transportation depot or workshop. The total toplit daylight zone shall be not less than half the floor area and shall comply with one of the following:

1. A minimum skylight area to toplit daylight zone of not less than 3 percent where all skylights have a VT of not less than 0.40, or VTannual of not less than 0.26, as determined in accordance with Section C303.1.3.

2. A minimum skylight effective aperture of not less than 1 percent, determined in accordance with Equation 4-3, of:

2.1 Not less than 1 percent, using a skylight's VT rating; or

2.2 Not less than 0.66 percent using a Tubular Daylighting Device's VT annual rating.

Click here to view image

where:

Exception: Skylights above daylight zones of enclosed spaces are not required in:

1. Spaces where the designed general lighting power densities are less than 0.5 W/ft (5.4 W/m2).

2. Areas where it is documented that existing structures or natural objects block direct beam sunlight on not less than half of the roof over the enclosed area for more than 1,500 daytime hours per year between 8 a.m. and 4 p.m.

3. Spaces where the daylight zone under rooftop monitors is greater than 50 percent of the enclosed space floor area.

-- Spaces where the total area minus the area of sidelit daylight zones is less than 2,500 square feet (232 m2), and where the lighting is controlled in accordance with Section C405.2.3.

-- Spaces designed as storm shelters complying with ICC 500.

delete and replace C402.3.2.1 Lighting controls in toplit daylight zones.

Daylight responsive controls shall be provided in toplit daylight zones.

delete and replace C402.3.2.2 Haze factor.

Skylights in office, storage, automotive service, manufacturing, nonrefrigerated warehouse, retail store and distribution/sorting area spaces shall have a glazing material or diffuser with a haze factor greater than 90 percent when tested in accordance with ASTM D1003.

Exception: Skylights and tubular daylighting devices designed and installed to exclude direct sunlight entering the occupied space by the use of fixed or automated baffles or the geometry of skylight and light well or the use of optical diffuser components.

delete and replace C402.3.5 Doors.

Opaque swinging doors shall comply with Table C402.1(2) and Table C402.1(3). Opaque nonswinging doors shall comply with Table C402.1(2) and Table C402.1(3). Opaque doors shall be considered as part of the gross area of above-grade walls that are part of the building thermal envelope. Opaque doors shall comply with Section C402.3.5.1 or C402.3.5.2. Other doors shall comply with the provisions of Section C402.3.3 for vertical fenestration.

add C402.3.5.1 Opaque swinging doors.

Opaque swinging doors shall comply with Table C402.1(2) and Table C402.1(3).

add C402.3.5.2 Nonswinging doors.

Opaque nonswinging doors that are horizontally hinged sectional doors with a single row of fenestration shall have an assembly U-factor less than or equal to 0.360, provided that the fenestration area is not less than 14 percent and not more than 25 percent of the total door area.

Exception: Other doors shall comply with the provisions of Section C402.4.3 for vertical fenestration.

delete and replace C402.4 Air leakage--thermal envelope.

The building thermal envelope shall comply with Sections C402.4.1 through C402.4.6.

delete and replace C402.4.1 Air barriers.

A continuous air barrier shall be provided throughout the building thermal envelope. The continuous air barriers shall be located on the inside or outside of the building thermal envelope, located within the assemblies composing the building thermal envelope, or any combination thereof. The air barrier shall comply with Section C402.4.1.1.

Exceptions:

1. For buildings larger than 250,000 ft² (25,000 m²), that do not include Group R or Group I occupancies, the air barrier shall either comply with section C402.4.1.1 or Sections C402.4.1.2 through C402.4.1.8.

2. Where air barrier performance testing is determined unfeasible by the Vermont Department of Public Service, the air barrier shall comply with sections C402.4.1.2 through C402.4.1.8.

delete and replace C402.4.1.1 Air barrier performance testing.

The building thermal envelope shall be tested in accordance with ASTM E779, ANSI/RESNET/ICC 380, ASTME3158 OR ASTM E1827 or an equivalent method approved by the Vermont Department of Public Service. The measured air leakage shall not exceed 0.25 cfm/ft2 of the building thermal envelope area at a pressure differential of 0.3 inch water gauge (75 Pa). Alternatively, portions of the building shall be tested and the measured air leakages shall be area weighted by the surface areas of the building envelope in each portion. The weighted average test results shall not exceed the whole building leakage limit. In the alternative approach, the following portions of the building shall be tested:

1. The entire envelope area of all stories that have any spaces directly under a roof.

2. The entire envelope area of all stories that have a building entrance, exposed floor, or loading dock, or are below grade.

3. Representative above-grade sections of the building totaling at least 25 percent of the wall area enclosing the remaining conditioned space.

Exception: R-2 building occupancies six stories or less shall be tested at a pressure differential of 0.2 inch water gauge (50 Pa), and the measured air leakage shall not exceed 0.15 cfm/ft2 of the building thermal envelope area.

delete and replace C402.4.1.4.1 Materials.

Materials with an air permeability not greater than 0.004 cfm/ft2 (0.02 L/s -- m2) under a pressure differential of 0.3 inch water gauge (75 Pa) when tested in accordance with ASTM E2178 shall comply with this section. Materials in Items 1 through 16 shall be deemed to comply with this section, provided that joints are sealed and materials are installed as air barriers in accordance with the manufacturer's instructions.

1. Plywood with a thickness of not less than 3/8 inch (10 mm).

2. Oriented strand board having a thickness of not less than3/8 inch (10 mm).

3. Extruded polystyrene insulation board having a thickness of not less than 1/2 inch (12.7 mm).

4. Foil-back polyisocyanurate insulation board having a thickness of not less 1/2 than / inch (12.7 mm).

5. Closed-cell spray foam having a minimum density of 1.5 pcf (2.4 kg/m3) and having a thickness of not less than 1/2inches (38 mm).

6. Open-cell spray foam with a density between 0.4 and 1.5 pcf (0.6 and 2.4 kg/m3) and having a thickness of not less than 4.5 inches (113 mm).

7. Exterior or interior gypsum board having a thickness of not less than 1/2 inch (12.7 mm).

8. Cement board having a thickness of not less than 1/2/ inch (12.7 mm).

9. Built-up roofing membrane.

10. Modified bituminous roof membrane.

11. Single-ply roof membrane.

12. A Portland cement/sand parge, or gypsum plaster having a thickness of not 5/8 less than / inch (15.9 mm).

13. Cast-in-place and precast concrete.

14. Fully grouted concrete block masonry.

15. Sheet steel or aluminum.

16. Solid or hollow masonry constructed of clay or shale masonry units.

delete and replace C402.4.1.4.2 Assemblies.

Assemblies of materials and components with an average air leakage not greater than 0.04 cfm/ft (0.2 L/s -- m) under a pressure differential of 0.3 inch of water

gauge (w.g.)(75 Pa) when tested in accordance with ASTM E2357, ASTM E1677, ASTM D8052 or ASTM E283 shall comply with this section. Assemblies listed in Items 1 through 3 shall be deemed to comply, provided that joints are sealed and the requirements of Section C402.4.1.3 are met.

1. Concrete masonry walls coated with either one application of block filler or two applications of a paint or sealer coating.

2. Masonry walls constructed of clay or shale masonry units with a nominal width of 4 inches (102 mm) or more.

3. A Portland cement/sand parge, stucco or plaster not less than 1/2 inch (12.7 mm) in thickness.

delete and replace C402.4.1.6 Rooms containing fuel-burning appliances that are not direct vented.

Where combustion air is supplied through openings in an exterior wall to a room or space containing a space-conditioning fuel-burning appliance, one of the following shall apply:

1. The room or space containing the appliance shall be located outside of the building thermal envelope.

2. The room or space containing the appliance shall be enclosed and isolated from conditioned spaces inside the building thermal envelope. Such rooms shall comply with all of the following:

2.1. The walls, floors and ceilings that separate the enclosed room or space from conditioned spaces shall be insulated to be not less than equivalent to the insulation requirement of below-grade walls as specified in Table C402.1(2) and Table C402.1(3).

2.2. The walls, floors and ceilings that separate the enclosed room or space from conditioned spaces shall be sealed in accordance with Section C402.4.1.3.

2.3. The doors into the enclosed room or space shall be fully gasketed.

2.4. Water lines and ducts in the enclosed room or space shall be insulated in accordance with Section C403.

2.5. Where an air duct supplying combustion air to the enclosed room or space passes through conditioned space, the duct shall be insulated to an R-value of not less than R-10.

Exception: Fireplaces and stoves complying with Section 2111.14 of the International Building Code.

delete and replace C402.4.2 Dwelling and sleeping unit enclosure testing.

The building thermal envelope shall be tested in accordance with ASTM E779, ANSI/RESNET/ICC 380, ASTM E1827 or an equivalent method approved by the code official. The measured air leakage shall not exceed 0.15 cfm/ft2 (1.5 L/s m2) of the testing unit enclosure area at a pressure differential of 0.2 inch water gauge (50 Pa). Where multiple dwelling units or sleeping units or other occupiable conditioned spaces are contained within one building thermal envelope, each unit shall be considered an individual testing unit, and the building air leakage shall be the weighted average of all testing unit results, weighted by each testing unit's enclosure area. Units shall be tested separately with an unguarded blower door test as follows:

1. Where buildings have fewer than eight testing units, each testing unit shall be tested.

2. For buildings with eight or more testing units, the greater of seven units or 20 percent of the testing units in the building shall be tested, including a top floor unit, a ground floor unit and a unit with the largest testing unit enclosure area. For each tested unit that exceeds the maximum air leakage rate, an additional two units shall be tested, including a mixture of testing unit types and locations.

delete and replace C402.4.4 Loading dock weather seals.

Cargo door openings and loading door openings shall be equipped with weather seals that restrict infiltration and provide direct contact along the top and sides of vehicles that are parked in the doorway. If equipped with an interior dock leveler, the deck of the leveler, rear pit wall, and the deck plate shall be insulated with a minimum of 1.5 inches of sprayed closed cell foam. The side pit walls and pit slab shall be insulated in accordance with the ASTM E283 slab on grade standard found in Table C402.1(2) and Table C402.1(3). The spaces between the pit wall and the deck skirts for the leveler shall be weather-stripped. Provide each dock board with an exterior face closure curtain to reduce air infiltration under the dock board.

add C402.4.6 Operable openings interlocking.

Where occupancies utilize operable openings to the outdoors that are larger than 40 square feet (3.7 m2) in area, such openings shall be interlocked with the heating and cooling system so as to raise the cooling setpoint to 90°F (32°C) and lower the heating setpoint to 55°F (13°C) whenever the operable opening is open. The change in heating and cooling setpoints shall occur within 10 minutes of opening the operable opening.

Exceptions:

1. Separately zoned areas associated with the preparation of food that contain appliances that contribute to the HVAC loads of a restaurant or similar type of occupancy.

2. Warehouses that utilize overhead doors for the function of the occupancy.

3. The first entrance doors where located in the exterior wall and are part of a vestibule system.

add C402.4.6.1 Operable controls.

Controls shall comply with Section C403.14.

add C402.5 Solar-ready zone

add C402.5.1 General.

A solar-ready zone shall be located on the roof of buildings and are oriented between 110 degrees and 270 degrees of true north or have low-slope roofs. Solar-ready zones shall comply with Sections C402.5.2 through C402.5.8.

Exceptions:

1. A building with a permanently installed, on-site renewable energy system.

2. A building with a solar-ready zone that is shaded for more than 70 percent of daylight hours annually.

3. A building where the licensed design professional certifies that the incident solar radiation available to the building is not suitable for a solar-ready zone.

4. A building where the licensed design professional certifies that the solar zone area required by Section C402.5.3 cannot be met because of extensive rooftop equipment, skylights, vegetative roof areas or other obstructions.

add C402.5.2 Construction document requirements for a solar-ready zone.

Construction documents shall indicate the solar-ready zone.

add C402.5.3 Solar-ready zone area.

The total solar-ready zone area shall be not less than 40 percent of the roof area calculated as the horizontally projected gross roof area less the area covered by skylights, occupied roof decks, vegetative roof areas and mandatory access or set back areas as required by the International Fire Code. The solar-ready zone shall be a single area or smaller, separated sub-zone areas. Each sub- zone shall be not less than 5 feet (1524 mm) in width in the narrowest dimension.

add C402.5.4 Obstructions.

Solar ready zones shall be free from obstructions, including pipes, vents, ducts, HVAC equipment, skylights and roof-mounted equipment.

add C402.5.5 Roof loads and documentation.

A collateral dead load of not less than 5 pounds per square foot (5 psf) (24.41 kg/m) shall be included in the gravity and lateral design calculations for the solar-ready zone. The structural design loads for roof dead load and roof live load shall be indicated on the construction documents.

add C402.5.6 Interconnection pathway.

Construction documents shall indicate pathways for routing of conduit or piping from the solar-ready zone to the electrical service panel and electrical energy storage system area or service hot water system.

add C402.5.7 Electrical energy storage system-ready area.

The floor area of the electrical energy storage system-ready area shall be not less than 2 feet (610 mm) in one dimension and 4 feet (1219 mm) in another dimension and located in accordance with rules adopted by Vermont fire safety code. The location and layout diagram of the electrical energy storage system-ready area shall be indicated on the construction documents.

add C402.5.8 Electrical service reserved space.

The main electrical service panel shall have a reserved space to allow installation of a dual-pole circuit breaker for future solar electric and a dual-pole circuit breaker for future electrical energy storage system installation. These spaces shall be labeled "For Future Solar Electric and Storage." The reserved spaces shall be positioned at the end of the panel that is opposite from the panel supply conductor connection.

Section C403. Building Mechanical Systems.

delete and replace C403.1 General.

In addition to the mechanical requirements of Section C403, projects must achieve the required number of credits based on building occupancy group as outlined in Table C406.1.1 and Table C406.1.2. To achieve the required credits, mechanical enhancements may be needed.

The requirements of C403 that may be affected and the corresponding C406 references are summarized in Table C403.1(1). For a full list of potential measures see Table C406.2.1 and Table C406.3.1.

add TABLE C403.1(1)

TABLE C403.1(1):

C406 MEASURES AFFECTING MECHANICAL SYSTEMS

Mechanical systems and equipment serving the building heating, cooling, ventilating or refrigerating needs shall comply with one of the following:

1. Sections C403.1.1 and C403.2 through C403.14

2. Data Centers shall comply with C403.1.1, C403.1.2 and C403.6 through C403.14

3. Section C403.1.3 and Sections within Section C403 that are listed in Table C407.2

Exception: Data center systems are exempt from the requirements of Sections C403.4 and C403.5.

add C403.1.2 Data centers.

Data center systems shall comply with Sections 6 and 8 of ASHRAE 90.4 with the following changes:

1. Replace maximum design mechanical load component (MLC) values specified in Table 6.2.1.1 of the ASHRAE 90.4 with the value in Table C403.1.2(1).

2. Replace maximum annualized MLC values specified in Table 6.2.1.2 of the ASHRAE 90.4 with the value in Table C403.1.2(2).

add TABLE C403.1.2(1)

TABLE C403.1.2(1)

MAXIMUM DESIGN MECHANICAL LOAD COMPONENT (DESIGN MLC)

add TABLE C403.1.2(2)

TABLE C403.1.2(2)

MAXIMUM ANNUALIZED MECHANICAL LOAD COMPONENT (ANNUALIZED MLC)

add C403.1.3 HVAC total system performance ratio (HVAC TSPR).

HVAC systems serving buildings or portions of buildings listed in C403.1.3.1 that are not served by systems listed in C403.1.3.2 shall have an HVAC total system performance ratio (HVAC TSPR) of the proposed design HVAC systems that is greater than or equal to the HVACTSPR of the standard reference design divided by the applicable mechanical performance factor (MPF) from Table C409.3.1. HVAC TSPR shall be calculated in accordance with Section C409, Calculation of HVAC Total System Performance Ratio.

Systems using the HVAC TSPR method shall also meet requirements in C403.1.3.3. C403.1.3.1 Included Building Types. HVAC systems that serve the following building use types are allowed to use the TSPR Method:

1. occupancy group B,

2. occupancy group M,

3. occupancy group A-3,

4. occupancy group E,

5. occupancy group R-1,

6. the dwelling units and common areas within occupancy group R-2 multifamily buildings.

add C403.1.3.2 Excluded Systems.

The following HVAC systems are excluded from using the TSPR Method:

1. HVAC Systems using

1.1 district heating water, chilled water or steam

2.1 small duct high velocity air cooled, space constrained air cooled, single package vertical air conditioner, single package vertical heat pump, or

3.1 double-duct air conditioner or double-duct heat pump as defined in subpart F to 10CFR part 431

4.1 packaged terminal air conditioners and packaged terminal heat pumps that have cooling capacity greater than 12,000 Btu/hr 5.(3500 kW)

5.1 a common heating source serving both HVAC and service water heating equipment, or

2. HVAC systems that provide recovered heat for service water heating

3. HVAC systems not included in Table C409.5.2.10.1

4. HVAC systems included in table C409.5.2.10.1 with parameters in Table C409.5.2.10.2, not identified as applicable to that HVAC system type.

5. HVAC systems with chilled water supplied by absorption chillers, heat recovery chillers, water to water heat pumps, air to water heat pumps, or a combination of air and water cooled chillers on the same chilled water loop.

6. HVAC systems served by heating water plants that include air to water or water to water heat pumps.

7. Underfloor air distribution and displacement ventilation HVAC systems.

8. Space conditioning systems that do not include mechanical cooling.

9. HVAC systems serving laundry rooms, elevator rooms, mechanical rooms, electrical rooms, data centers, and computer rooms.

10. Buildings or areas of medical office buildings that comply fully with ASHRAE Standard 170, including but not limited to surgical centers, or that are required by other applicable codes or standards to provide 24/7 air handling unit operation

11. HVAC systems serving laboratories with fume hoods

12. Locker rooms with more than 2 showers

13. Natatoriums and rooms with saunas

14. Restaurants and commercial kitchens with total cooking capacity greater than 100,000 Btu/h

15. Areas of buildings with commercial refrigeration equipment exceeding 100 kW of power input.

16. Cafeterias and dining rooms

add C403.1.3.3 TSPR Method Partial Prescriptive Requirements.

HVAC systems using the HVAC Performance Rating Method shall meet relevant prescriptive requirements in Section C403 as follows:

1. Air economizers shall meet the requirements of Section C403.5.3.4 "relief of excess outdoor air" and Section C403.5.5 "Economizer fault detection and diagnostics."

2. Variable-air-volume system systems shall meet requirements of Sections C403.6.5, C403.6.6, and C403.6.9.

3. Hydronic systems shall meet the requirements of C403.4.4.

4. Plants with multiple chillers or boilers shall meet the requirements of Section C403.4.5.

5. Hydronic (Water Loop) Heat Pumps and Water-Cooled Unitary Air Conditioners shall meet the requirements of Section C403.4.3.3.

6. Cooling tower turndown shall meet requirements of Section C403.10.4.

7. Heating of unenclosed spaces shall meet the requirements of Section C403.13.1.

8. Hot-gas bypass shall meet the requirements of Section C403.3.3.

9. Systems shall meet the operable openings interlock requirements of Section C402.5.11.10.

10. Refrigeration systems shall meet the requirements of Section C403.11.

delete and replace C403.2 System design

Mechanical systems shall be designed to comply with Sections C403.2.1 through C403.2.3 Where elements of a building's mechanical systems are addressed in Sections C403.3 through C403.14, such elements shall comply with the applicable provisions of those sections. Hydronic heating systems and associated equipment shall be sized for and operated at a maximum heating hot water temperature of 140F. Construction documents shall include submittal of a Sequence of Operations for all mechanical equipment, including a specification outlining each of the functions required by this section.

delete and replace C403.2.2 Ventilation

Ventilation, either natural or mechanical, shall be provided in accordance with. ASHRAE Standard 62.1. Where mechanical ventilation is provided, the system shall provide the capability to reduce the outdoor air supply to the minimum required by ASHRAE Standard 62.1. The design professional shall utilize ventilation rates based on the expected occupancy level of the space. Life safety maximum allowable occupancy density shall not be used as a ventilation basis of design.

Exception: All Residential occupancies. See the ventilation requirements of Section 304 of the Vermont Residential Building Energy Standards.

delete and replace C403.2.4 Fault detection and diagnostics.

New buildings with an HVAC system serving a gross conditioned floor area of 100,000 square feet (9290 m2) or larger shall include a fault detection and diagnostics (FDD) system to monitor the HVAC system's performance and automatically identify faults. The FDD system shall:

1. Include permanently installed sensors and devices to monitor the HVAC system's performance.

2. Sample the HVAC system's performance at least once every 15 minutes.

3. Automatically identify and report HVAC system faults.

4. Automatically notify authorized personnel of identified HVAC system faults.

5. Automatically provide prioritized recommendations for repair of identified faults based on analysis of data collected from the sampling of HVAC system performance.

6. Be capable of transmitting the prioritized fault repair recommendations to remotely located authorized personnel.

Exception: R-1 and R-2 occupancies.

add C403.2.5 Mechanical systems commissioning and completion requirements. Mechanical systems shall be commissioned and completed in accordance with Section C407

delete and replace C403.3 Heating and cooling equipment efficiencies

Heating and cooling equipment installed in mechanical systems shall be sized in accordance with Section C403.3.1 and shall be not less efficient in the use of energy than as specified in Section C403.3.2.

delete and replace C403.3.1 Equipment sizing

The output capacity of heating and cooling equipment shall be not greater than that of the smallest available equipment size that exceeds the loads calculated in accordance with Section C403.1.1. A single piece of equipment providing both heating and cooling shall satisfy this provision for one function with the capacity for the other function as small as possible, within available equipment options. Heating and cooling equipment sizing is permitted to be up to 10 percent greater (to the next nearest available size) than the calculated peak heating and cooling loads to allow for building pickup and cool down after temperature setback conditions or for proper airflow volumes. Heat pump equipment shall not be sized greater than the calculated peak heating and cooling loads, as they are exempt from temperature setbacks and are significantly less efficient when oversized. Outdoor condensing units serving multiple indoor heat pump units shall be sized equal or less than the total capacity of the indoor units.

Exceptions:

1. Required standby equipment and systems provided with controls and devices that allow such systems or equipment to operate automatically only when the primary equipment is not operating.

2. Multiple units of the same equipment type with combined capacities exceeding the design load and provided with controls that are configured to sequence the operation of each unit based on load.

delete and replace TABLE C403.3.2(1)

TABLE C403.3.2(1)

ELECTRICALLY OPERATED UNITARY AIR CONDITIONERS AND CONDENSING UNITS - MINIMUM EFFICIENCY REQUIREMENTS [c, ] [d ]

TABLE C403.3.2(1)--continued MINIMUM EFFICIENCY REQUIREMENTS:

ELECTRICALLY OPERATED UNITARY AIR CONDITIONERS AND CONDENSING UNITS

For SI: 1 British thermal unit per hour = 0.2931 W.

a. Chapter 6 contains a complete specification of the referenced test procedure, including the reference year version of the test procedure.

b. Single-phase, US air-cooled air conditioners less than 65,000 Btu/h are regulated as consumer products by the US Department of Energy Code of Federal Regulations DOE 10 CFR 430 . SEER and SEER2 values for single- phase products are set by the US Department of Energy.

c. DOE 10 CFR 430 Subpart B Appendix M1 includes the test procedure updates effective 1/1/2023 that will be incorporated in AHRI 210/240--2023.

d. This table is a replica of ASHRAE 90.1 Table 6.8.1-1 Electrically Operated Unitary Air Conditioners and Condensing Units--Minimum Efficiency Requirements.

delete and replace TABLE C403.3.2(2

TABLE C403.3.2(2)

History

• EFFECTIVE DATE:
• Original effective date not provided.
• AMENDED:
• January 3, 2012 Secretary of State Rule Log #11-041; March 1, 2015 Secretary of State Rule Log #14-045; September 1, 2020 Secretary of State Rule Log #19-073; 7/1/2024 Secretary of State Rule Log #23-019

Chapter 004 VERMONT RESIDENTIAL BUILDING ENERGY STANDARDS (RBES) AMENDMENTS

31-004 Code Vt. R. 31-000-004-X VERMONT RESIDENTIAL BUILDING ENERGY STANDARDS (RBES) AMENDMENTS

Preface

delete and replace Preface as follows:

Introduction

The 2024 Vermont Residential Building Energy Standards (RBES) is based on the 2020 Vermont Residential Building Energy Standards, which are based on the 2018 and 2015 International Energy Conservation Code ®(IECC®). The 2024 RBES also includes 2021 and 2018 IECC energy efficiency requirements as well as select language updates and additional, more stringent Vermont energy efficiency requirements.

This comprehensive energy conservation code establishes minimum regulations for energy efficient buildings using prescriptive and performance-related provisions. It is founded on broad-based principles that make possible the use of new materials and new energy efficient designs.

The International Energy Conservation Code provisions provide many benefits, among which is the model code development process that offers an international forum for energy professionals to discuss performance and prescriptive code requirements. This model code also encourages international consistency in the application of provisions.

Development

This 2024 RBES is founded on principles intended to establish provisions consistent with the scope of an energy conservation code that adequately conserves energy; provisions that do not unnecessarily increase construction costs; provisions that do not restrict the use of new materials, products or methods of construction; and provisions that do not give preferential treatment to particular types or classes of materials, products or methods of construction.

Background

The Vermont Residential Building Energy Standards (RBES) was adopted by statute (30 V.S.A. §51) in 1997. Act 89 of 2013 established a Stretch Code defined as a building energy code for residential buildings that achieves greater energy savings than the RBES. The stretch code shall be available for adoption by municipalities under 24 V.S.A. §117 and shall apply in proceedings under 10 V.S.A. §151 (Act 250). Update Process The Residential Building Energy Standards statute requires that revisions to the RBES are made promptly after the issuance of updated standards under the International Energy Conservation Code (IECC). The Department of Public Service (PSD) is required to convene stakeholders that include mortgage lenders, builders, building designers, utility representatives, and other persons with experience and expertise prior to the adoption of a revised RBES to provide recommendations.

The 2024 RBES is based on the language in the 2015 edition of the IECC and includes efficiency improvements included in the 2018 and 2021 IECC to ensure continued progression in efficiency in the Vermont RBES. The 2024 RBES builds on the "Package Plus Points" approach to code compliance, initiated in 2020. (Previous code compliance was achieved through a "prescriptive package" approach). The addition of "points" provides builders and designers greater flexibility in complying with the RBES. The 2024 RBES also simplified the Packages and makes them applicable to both the Base Code and the Stretch Code, with the only difference being the number of Points needing to be achieved. The 2024 RBES also attempts to better address multifamily construction by aligning the standards between RBES and the Commercial Building Energy Standards (CBES) so that regardless of whether the multifamily building falls under RBES (up to three stories in height) or CBES (buildings four stories or higher), the energy standards should be consistent. The Code Collaborative Process undertaken in 2021 allowed for more in-depth discussions with stakeholders on topics and many of the suggestions are reflected in the 2024 RBES. The Vermont PSD also held a series of stakeholder meetings in 2022 to gather feedback on proposed changes to the RBES. The revisions presented in this document were modified based on input received from these meetings.

EFFECTIVE USE OF THE 2024 VERMONT RESIDENTIAL BUILDING ENERGY STANDARDS

The 2024 Vermont Residential Building Energy Standards (RBES) is a code that regulates minimum energy conservation requirements for new buildings as well as additions, alterations, renovations, and repairs to existing buildings. The 2024 RBES addresses energy conservation requirements for all aspects of energy uses in residential construction, including heating and ventilating, lighting, water heating, and power usage for appliances and building systems.

The 2024 RBES is a design document. For example, before constructing a building, the designer must determine the minimum insulation R-values and fenestration U-factors for the building exterior envelope. The RBES sets forth minimum requirements for exterior envelope insulation, window and door U-factors and SHGC ratings, duct insulation, lighting and power efficiency, mechanical ventilation, and water distribution insulation.

Arrangement and Format of the 2020 RBES

The 2024 RBES, like other codes published by ICC, is arranged and organized to follow sequential steps that generally occur during a plan review or inspection. The 2024 RBES is divided into six different parts:

The following is a chapter-by-chapter synopsis of the scope and intent of the provisions of the 2024 Vermont Residential Building Energy Standards:

Chapter 1: Scope and Administration. This chapter contains provisions for the application, enforcement and administration of subsequent requirements of the code. In addition to establishing the scope of the code, Chapter 1 identifies which buildings and structures come under its purview. Chapter 1 is largely concerned with maintaining "due process of law" in enforcing the energy conservation criteria contained in the body of this code. Only through careful observation of the administrative provisions can the code official or authority having jurisdiction, where one exists, reasonably expect to demonstrate that "equal protection under the law" has been provided.

Chapter 2 Definitions. Chapter 2 is the repository of the definitions of terms used in the body of the code. Codes are technical documents and every word, term and punctuation mark can impact the meaning of the code text and the intended results. The code often uses terms that have a unique meaning in the code and the code meaning can differ substantially from the ordinarily understood meaning of the term as used outside of the code.

The terms defined in Chapter 2 are deemed to be of prime importance in establishing the meaning and intent of the code text. The user of the code should be familiar with and consult this chapter because the definitions are essential to the correct interpretation of the code and the user may not be aware that a term is defined.

Where understanding of a term's definition is especially key to or necessary for understanding of a particular code provision, the term is shown in italics wherever it appears in the code. This is true only for those terms that have a meaning that is unique to the code. In other words, the generally understood meaning of a term or phrase might not be sufficient or consistent with the meaning prescribed by the code; therefore, it is essential that the code-defined meaning be known.

Guidance regarding tense, gender and plurality of defined terms as well as guidance regarding terms not defined in this code is provided.

Chapter 3 General Requirements. Chapter 3 provides interior design conditions that are used as a basis for assumptions in heating and cooling load calculations and provides basic material requirements for insulation materials and fenestration materials, and provides standards for residential mechanical ventilation and combustion safety.

Chapter 4 Residential Energy Efficiency. Chapter 4 contains the energy-efficiency-related requirements for the design and construction of residential buildings regulated under this code. It should be noted that the definition of a residential building in this code is unique for this code. In this code, a residential building is an R-2, R-3 or R-4 buildings three stories or less in height. All other R-1 buildings, including residential buildings greater than three stories in height, are regulated by the energy conservation requirements in the Vermont Commercial Building Energy Standards (CBES). The applicable portions of a residential building must comply with the provisions within this chapter for energy efficiency. This chapter defines requirements for the portions of the building and building systems that impact energy use in new residential construction and promotes the effective use of energy. The provisions within the chapter promote energy efficiency in the building envelope, the heating and cooling system, lighting and the service water heating system of the building. Vermont has adopted a two-tiered code structure with a "base code" that applies statewide, and a "Stretch Code" that is more stringent. The Stretch Code applies to all Act 250 development projects and is also available for municipalities that choose to adopt a higher energy standard.

Chapter 5 Existing Buildings. Chapter 5 of each set of provisions contains the technical energy efficiency requirements for existing buildings. Chapter 5 provisions address the maintenance of buildings in compliance with the code as well as how additions, alterations, repairs and changes of occupancy need to be addressed from the standpoint of energy efficiency. Specific provisions are provided for historic buildings.

Chapter 6 Referenced Standards. The code contains numerous references to standards that are used to regulate materials and methods of construction. Chapter 6 contains a comprehensive list of all standards that are referenced in the code. The standards are part of the code to the extent of the reference to the standard. Compliance with the referenced standard is necessary for compliance with this code. By providing specifically adopted standards, the construction and installation requirements necessary for compliance with the code can be readily determined. The basis for code compliance is, therefore, established and available on an equal basis to the code official, or other authority having jurisdiction, where one exists, contractor, designer and owner.

Chapter 6 is organized in a manner that makes it easy to locate specific standards. It lists all of the referenced standards, alphabetically, by acronym of the promulgating agency of the standard. Each agency's standards are then listed in either alphabetical or numeric order based upon the standard identification. The list also contains the title of the standard; the edition (date) of the standard referenced; any addenda included as part of the ICC adoption; and the section or sections of this code that reference the standard.

Italicized Terms

Selected terms set forth in Chapter 2, Definitions, are italicized where they appear in code text. Such terms are not italicized where the definition set forth in Chapter 2 does not impart the intended meaning in the use of the term. The terms selected have definitions that the user should read carefully to facilitate better understanding of the code.

Marginal Markings

Solid vertical lines in the margins within the body of the code indicate a technical change from the requirements of the IECC 2015 and 2018 edition. Vermont specific additions and changes are designated through dotted lines in the margin. Deletion indicators in the form of an arrow (RIGHT ARROW') are provided in the margin where an entire section, paragraph, exception or table has been deleted or an item in a list of items or a table has been deleted.

Abbreviations and Notations

The following is a list of common abbreviations and units of measurement used in this code. Some of the abbreviations are for terms defined in Chapter 2. Others are terms used in various tables and text of the code.

AFUE Annual fuel utilization efficiency

bhp Brake horsepower (fans)

Btu British thermal unit

Btu/h-ft [2]Btu per hour per square foot

C-factor See Chapter 2--Definitions

CDD Cooling degree days

cfm Cubic feet per minute

cfm/ft [2]Cubic feet per minute per square foot

ci Continuous insulation

COP Coefficient of performance

DCV Demand control ventilation

°C Degrees Celsius

°F Degrees Fahrenheit

DWHR Drain water heat recovery

DX Direct expansion

[E] c Combustion efficiency

[E] v Ventilation efficiency

[E] t Thermal efficiency

EER Energy efficiency ratio

EF Energy factor

ERI Energy Rating index

F -factor See Chapter 2--Definitions

FDD Fault detection and diagnostics

FEG Fan efficiency grade

FL Full load

ft [2]Square foot

gpm Gallons per minute

HDD Heating degree days

HERS Home Energy Rating System

hp Horsepower

HSPF Heating seasonal performance factor

HVAC Heating, ventilating and air conditioning

IEER Integrated energy efficiency ratio

IPLV Integrated Part Load Value

Kg/m [2]Kilograms per square meter

kW Kilowatt

LPD Light power density (lighting power allowance)

L/s Liters per second

Ls Liner system

m [2]square meters

MERV Minimum efficiency reporting value

NAECA National Appliance Energy Conservation Act

NPLV Nonstandard Part Load Value

Pa Pascal

PF Projection factor

pcf Pounds per cubic foot

PSD Department of Public Service (Vermont)

psf Pounds per square foot

PTAC Packaged terminal air conditioner

PTHP Packaged terminal heat pump

R -value See Chapter 2--Definitions

SCOP Sensible coefficient of performance

SEER Seasonal energy efficiency ratio

SHGC Solar Heat Gain Coefficient

SPVAC Single packaged vertical air conditioner

SPVHP Single packaged vertical heat pump

SRI Solar reflectance index

SWHF Service water heat recovery factor

U -factor See Chapter 2--Definitions

VAV Variable air volume

VRF Variable refrigerant flow

VT Visible transmittance

W Watts

w.c. Water column

w.g. Water gauge

CHAPTER 1 ADMINISTRATION

PART 1 -- SCOPE AND APPLICATION

Section R101. Scope and General Requirements.

delete and replace R101.1 Title.

This code shall be known as the 2024 Vermont Residential Building Energy Standards (RBES) and shall be cited as such. It is referred to herein as "this code."

delete and replace R101.2 Scope.

This code applies to residential buildings and the building sites and associated systems and equipment, including one family dwellings, two family dwellings, and multi-family housing three stories or less in height.

For the purpose of determining the building type that must comply with the RBES under Vermont statute, a multifamily building is a residential building or mixed-use building with three or more dwelling units three stories or less in height. Multifamily buildings of four stories or more in height must comply with the CBES (from Vermont 30 V.S.A. §51.)

While many sections of this code (e.g., inspections, review of construction documents, compliance, etc.) do not pertain to most of Vermont that lacks a code official or authority having jurisdiction, these sections are included to provide guidance for those jurisdictions that do have a code official or authority having jurisdiction.

delete and replace R101.7 Base and Stretch Code.

The " Base Code" is the RBES Energy Code that is applicable throughout Vermont, except for projects subject to 10 V.S.A. Chapter 151 (Act 250), and in any municipalities that have adopted the more stringent "Stretch Code."

All Base Code requirements shall be met in addition to the requirements in the Stretch Code section R407 in order to be in compliance with the Stretch Code.

delete and replace R101.8 Compliance options.

There are three thermal efficiency compliance options:

1. Package Plus Points: For the Base Code, Table R402.2.1 lists the options for insulation and fenestration packages. Table R402.1.2.2 lists the additional points required for compliance based on building square footage, and Table R402.1.2.3 lists the components and respective point values to be used to meet the point requirement in Table R402.1.2.2. For the Stretch Code, Table R407.2.1.1 lists three options for insulation and fenestration packages, Table R407.2.1.2 lists the required additional points for compliance based on building square footage, and Table R407.2.1.3 lists the components and respective point values to be used to meet the point requirement in Table R407.2.1.2.

2. RES check [TM: ] The U.S. Department of Energy's REScheck [TM ] software.

3. Home Energy Rating System (HERS):

A HERS energy rating that demonstrates compliance with Section 406.4 for the Base or Stretch Code based on REM v16.3.3 or later or Ekotrope version 4.0 or later that is accredited by RESNET at https://www.resnet.us/providers/accredited-providers/hers-software-tools/.

PART 2 -- ADMINISTRATION AND ENFORCEMENT

Section R 103. Construction Documents.

delete and replace R103.1 General.

Where required, construction documents, technical reports and other supporting data shall be submitted in one or more sets, or in a digital format where allowed by the code official or authority having jurisdiction, where one exists, with each application for a permit. The construction documents and technical reports shall be prepared by a registered design professional where required by the statutes of the jurisdiction in which the project is to be constructed. Where special conditions exist, the code official or authority having jurisdiction, where one exists, is authorized to require necessary construction documents to be prepared by a registered design professional.

Exception: The code official or authority having jurisdiction, where one exists, is authorized to waive the requirements for construction documents or other supporting data if the code official or authority having jurisdiction, where one exists, determines they are not necessary to confirm compliance with this code.

delete and replace R103.2 Information on construction documents.

Where required, construction documents shall be drawn to scale upon suitable material. Electronic media documents are permitted to be submitted where approved by the code official or other authority having jurisdiction, where one exists. Construction documents shall be of sufficient clarity to indicate the location, nature and extent of the work proposed, and show in sufficient detail pertinent data and features of the building, systems and equipment as herein governed. Details shall include, but are not limited to, the following as applicable:

Insulation materials and their R -values.

2. Fenestration U -factors and solar heat gain coefficients (SHGC).

Area-weighted U -factor and solar heat gain coefficients (SHGC) calculations.

4. Mechanical system design criteria.

5. Mechanical and service water-heating systems and equipment types, sizes and efficiencies.

6. Equipment and system controls and control strategies.

7. Duct sealing, duct and pipe insulation and location.

8. Air sealing details.

9. Energy code compliance path.

Section R 104. Inspections.

Delete and replace section R104 and subsections as follows:

R104.1 General.

Where required, construction or work for which a permit is required shall be subject to inspection by the code official or other authority having jurisdiction, where one exists, or his or her designated agent, and such construction or work shall remain visible and able to be accessed for inspection purposes until approved. It shall be the duty of the permit applicant to cause the work to remain visible and able to be accessed for inspection purposes. Neither the code official nor the jurisdiction shall be liable for expense entailed in the removal or replacement of any material, product, system or building component required to allow inspection to validate compliance with this code.

CHAPTER 2 DEFINITIONS

Section R 202. General Definitions.

add ACCESS (TO). That which enables a device, appliance, or equipment to be reached by ready access or by a means that first requires the removal or movement of a panel or similar obstruction.

delete and replace AIR BARRIER. An air barrier is a durable assembly that blocks air flow through the building thermal envelope and its assemblies. Air barriers must be continuous, sealed at all joints, penetrations, and interruptions using durable sealants intended for such use and compatible with all adjacent materials, and able to resist pressures without displacement or damage.

add BUILDING SHELL AREA. The sum of the area of ceiling, floors, and walls, slab (all "six sides") separating a dwelling unit's conditioned space from the exterior or from adjacent conditioned or unconditioned spaces. Wall height shall be measured from the finished floor of the dwelling unit to the underside of the floor above.

delete and replace BUILDING SITE. A contiguous area of land that is under the ownership or control of one entity.

add CARBON DIOXIDE EQUIVALENT (CO2E). A measure used to compare the impact of various greenhouse gases based on their global warming potential (GWP). CO2e approximates the warming effect of a unit mass of a given greenhouse gas relative to that of carbon dioxide (CO2).

add CAVITY INSULATION. Insulating material located between framing members.

delete and replace CLIMATE ZONE. A geographical region based on climatic criteria as specified in this code. Vermont is Climate Zone 6.

delete DEADBAND. The temperature range in which no heating or cooling is used.

add DEMAND RESPONSE SIGNAL. A signal that indicates a price or a request to modify electricity consumption for a limited time period.

add DEMAND RESPONSIVE CONTROL. A control capable of receiving and automatically responding to a demand response signal.

add DIMMER. A control device that is capable of continuously varying the light output and energy use of light sources.

add ELECTRIC VEHICLE CHARGING - LEVEL 2 CAPABLE. Level 2 "capable" includes space in the utility room for panel(s) of at least one minimum 40-ampere branch circuit to be provided to garages and/or the exterior of the building to accommodate a future dedicated Society of Automotive Engineers (SAE) standard J1772-approved Level 2 EVSE with a J1772 connector or NEMA 14-50, or equivalent, within 5 feet of the centerline for each EV charging parking space. A conduit or other unobstructed path to easily run a future wire to the parking spot shall also be provided.

add ELECTRIC VEHICLE CAPABLE PARKING SPACE. A parking space with all the requisite infrastructure in place within five feet to allow electrical wiring and connection to power for EVSE.

delete and replace ELECTRIC VEHICLE SUPPLY EQUIPMENT (EVSE). Level 2 electric vehicle charging parking that requires one 208/240V 40 amp grounded connection for electric vehicle charging through dedicated EVSE with J1772 connector or AC receptacle, NEMA 14-50, or equivalent, within 5 feet (1524 mm) of the centerline for each EV charging parking space.

add GLOBAL WARMING POTENTIAL (GWP). GWP is an index for estimating the relative global warming contribution of atmospheric emissions of 1 kg of a particular greenhouse gas compared to emissions of 1 kg of CO2. The following GWP values are used based on a 100-year time horizon: 1 for CO2, < 10 for pentane (e.g., C5H12), and 1430 for R-134a (CH2FCF3).

add GLOBAL WARMING POTENTIAL (GWP) INTENSITY. For the purposes of this document, GWP intensity refers to the GWP impact from materials (kg CO2e) divided by the project's total conditioned floor area in square feet (ft2).

delete HIGH-EFFICACY LAMPS/ LIGHTING.

add HIGH-EFFICACY LIGHT SOURCES. Non-linear medium screw- and pin-base lamps with a minimum efficacy of not less than 65 lumens per watt; or light fixtures of not less than 65 lumens per watt. In determining the number or percent of lamps, each replaceable lamp (or light string) connected to a permanently installed lighting fixture shall count as one lamp.

delete LEVEL 1 ELECTRIC VEHICLE CHARGING.

delete LEVEL 2 ELECTRIC VEHICLE CHARGING.

delete and replace LIGHTING. See "High-efficacy light sources."

delete and replace MULTIFAMILY DWELLING/BUILDING. A building containing three or more dwelling units where the occupants are primarily permanent in nature and which are adjacent vertically or horizontally. If built side-by-side, at least one of the following is true:

(1) they do not have a wall that extends from ground to roof,

(2) they share a heating system, or

(3) they have interstructural public utilities such as water supply/sewage disposal.

add NET ZERO ENERGY READY. A highly efficient and cost-effective building designed and constructed so that renewable energy could offset all or most of its annual energy consumption.

add OCCUPANT SENSOR CONTROL. An automatic control device that detects the presence or absence of people within an area and causes lighting, equipment or appliances to be regulated accordingly.

add ON-SITE RENEWABLE ENERGY GENERATION. Energy from renewable energy resources that is generated at the building site.

add READY ACCESS (TO). That which enables a device, appliance, or equipment to be directly reached without requiring the removal or movement of any panel or similar obstruction.

add RENEWABLE ENERGY CERTIFICATE (REC). An instrument that represents the environmental attributes of one megawatt hour of renewable energy; also known as an energy attribute certificate (EAC).

delete RENEWABLE ENERGY SOURCES.

add RENEWABLE ENERGY RESOURCES. Energy produced using a technology that relies on a resource that is being consumed at a harvest rate at or below its natural regeneration rate including, but not limited to, solar hot water, solar hot air, solar photovoltaics, wind, and hydro.

(A) Methane gas and other flammable gases produced by the decay of sewage treatment plant wastes or landfill wastes and anaerobic digestion of agricultural products, byproducts, or wastes shall be considered renewable energy resources, but no form of solid waste, other than agricultural or silvicultural waste, shall be considered renewable.

(B) The only portion of electricity produced by a system of generating resources that shall be considered renewable is that portion generated by a technology that utilizes a renewable fuel or energy source.

(C) The following fuels shall not be considered renewable energy sources: coal, oil, propane, and fossil natural gas.

(D) Biomass is considered renewable.

(E) Biodiesel is considered renewable.

delete and replace SOLAR ENERGY SOURCE. Source of thermal, chemical, or electrical energy derived directly from conversion of incident solar radiation.

delete and replace STRETCH CODE. A building energy code that achieves greater energy savings than the B RBES Base Code. The Stretch Code is required for Act 250 projects and may be adopted by municipalities.

add THERMAL DISTRIBUTION EFFICIENCY (TDE). The resistance to changes in air heat as air is conveyed through a distance of air duct. TDE is a heat loss calculation evaluating the difference in the heat of the air between the air duct inlet and outlet caused by differences in temperatures between the air in the duct and the duct material. TDE is expressed as a percent difference between the inlet and outlet heat in the duct.

add TINY HOUSE. A detached dwelling unit of less than 400 square feet of floor area excluding lofts.

add TYPE III PRODUCT-SPECIFIC ENVIRONMENTAL PRODUCT DECLARATION (EPD). An EPD is a document that describes the results of a life cycle assessment (LCA) for a material or product. While there are industry-specific EPDs, which average results across multiple product manufacturers, product-specific EPDs are the most thorough type of EPD. Type III, product-specific EPDs cover a single product from a manufacturer and are reviewed by a third-party entity. They conform to ISO 14025 and either EN 15804 or ISO 21930. Like all product specific EPDs, the scope must cover the product's life-cycle from cradle to gate.

CHAPTER 3 GENERAL REQUIREMENTS

Section R 302. Design Conditions.

add R302.2 Climatic data.

The following design parameters in Table 302.2 shall be used for calculations required under this code.

Adjustments may be made only in the following cases:

1. Winter heating design temperatures for projects either:

i. Located at an elevation of 1,500 feet (457 m) or higher, or

ii. Located in Caledonia, Essex or Orleans counties.

iii. Adjustments shall be made as listed in the National Climate Data Center for the specific weather station: http://www.ncdc.noaa.gov/cdo-web/.

2. As approved by the code official or authority having jurisdiction, where one exists.

Section R 303. Materials, Systems and Equipment.

delete and replace R303.1.2 Insulation mark installation.

Insulating materials shall be installed such that the manufacturer's R-value mark is readily observable upon inspection. For insulation materials that are installed without an observable manufacturer's R-value mark, such as blown or draped products, an insulation certificate complying with Section R303.1.1 shall be left immediately after installation by the installer, in a conspicuous location within the building, to certify the installed R-value of the insulation material.

add R303.1.5 Air-impermeable insulation.

Insulation having an air permeability not greater than 0.004 cubic feet per minute per square foot [0.002 L/(s x m2)] under pressure differential of 0.3 inch water gauge (75 Pa) when tested in accordance with ASTME2178 shall be determined air-impermeable insulation.

delete and replace R303.1.1.1 Blown or sprayed roof and ceiling insulation.

The thickness of blown-in or sprayed roof/ceiling insulation (fiberglass or cellulose shall be written in inches (mm) on markers that are installed at least one for every 300 square feet (28 m [2)] throughout the attic space. The markers shall be affixed to the trusses or joists and marked with the minimum initial installed thickness with numbers not less than 1 inch (25 mm) in height. Each marker shall face the attic access opening. Spray polyurethane foam minimum thickness and installed R -value shall be listed on certification provided by the insulation installer.

Section 304. Design Criteria for Residential Ventilation Systems.

delete and replace R304.1 Scope.

This section shall govern ventilation of the dwelling unit(s) within Type R-1 residential buildings, Type R-2 residential buildings and multiple single-family attached dwellings (townhouses and multifamily buildings) not more than three stories in height.

delete and replace R304.1.1 Compliance.

Compliance with Section 304 shall be achieved by installing a whole house balanced ventilation system with minimum 75 SRE and 1.2 cfm/Watt, determined in accordance with HVI Publication 920 and listed in HVI Publication 911, while also meeting compliance with Sections 304.2 through 304.11 or demonstrating compliance with one of the following alternatives:

ASHRAE Standard 62.2--2019 (Ventilation and Acceptable Indoor Air Quality in Low-Rise

Residential Buildings)

2. Passive house ventilation requirements (PHI or PHIUS)

Exception

1. Whole house balanced ventilation systems that are controlled using user-settable closed-loop feedback based on pollutant levels (e.g., carbon dioxide or volatile organic compounds) are not subject to run-time ventilation rate minimums in the standards referenced above, or Section 304.6.1.1.

2. Tiny houses may install an exhaust-only ventilation system.

delete and replace 304.2 Local ventilation.

Ventilation fans in bathrooms containing a bathtub, shower, spa or similar bathing fixture and not included in the whole house ventilation system shall be sized to meet the net capacity rates as required in Table 304.2. Whole house ventilation fans serving both localized and whole house ventilation functions shall be sized to meet the net capacity rates as required by Section 304.6 and must meet all other requirements listed in Section 304.3, as applicable.

TABLE 304.2

MINIMUM REQUIRED LOCAL EXHAUST

delete R304.3 Whole house balanced ventilation.

delete and replace R304.5 Fan motor requirements.

Fans installed for the purpose of providing whole house ventilation must meet the minimum requirements as specified in this section.

delete R304.5.2 Fan power consumption.

delete R304.5.34 Performance verification.

delete and replace R304.6 Net capacity requirements.

Whole house ventilation system fans shall be installed according to the manufacturer's installation instructions and shall have the manufacturer's fan flow ratings as listed in accordance with HVI 911. Unless the whole house system is tested according to procedures in Section R304.6.1, the minimum continuous flow rate that the ventilation system must be capable of supplying during its operation shall be based on the rate per bedroom as specified in Table R304.6.

TABLE R304.6

PRESCRIPTIVE FAN CAPACITY REQUIREMENTS FOR CENTRALLY DUCTED SYSTEMS

For SI: 1 cubic foot per minute = 0.0004719 m /s, 1 cubic foot per minute per square foot = 0.00508 m /(s m).

a. Represents the total installed rated capacity of all fans designed for whole house ventilation.

delete and replace R304.6.1 Testing option.

Testing may be done for Points to verify that the whole house ventilation system satisfies the ventilation requirements of this section in accordance with Sections R304.6.1.1 and R304.6.1.2.

delete and replace R304.8 Controls.

Whole house ventilation systems (balanced ventilation) shall be capable of being set remotely for continuous operation or shall be provided with an automatic control for intermittent operation. All whole house ventilation controls shall be readily accessible.

Exception: Fans installed expressly for local ventilation purposes.

delete and replace R304.9.3 Ducts.

Smooth wall ducts (for example, metal or composite) must be used for all duct runs longer than 8 feet (2438 mm). Ducts shall be insulated when installed in an unheated location

add R304.9.9 Exhaust Dampers.

Dampers with positive closures shall be installed to keep outside air from entering the exhaust duct when the system is not operating.

Exception: Mechanical ventilation systems designed for continuous operation.

delete and replace R304.11 Makeup air required.

Exhaust hood systems and clothes dryers capable of exhausting in excess of 400 cubic feet per minute (0.19 m /s) shall be provided with makeup air at a rate approximately equal to the exhaust air rate. Such makeup air systems shall be equipped with a means of closure and shall be automatically controlled to start and operate simultaneously with the exhaust system.

CHAPTER 4 RESIDENTIAL ENERGY EFFICIENCY

Section R 401. General.

delete and replace R401.1 Scope.

This chapter applies to residential buildings compliance with both the Base Code and Stretch Code. Stretch Code requires compliance with all Base Code requirements throughout RBES, plus achieving the additional points specified in Table R402.1.2.2, following all requirements of the following sections, and complying with Section R407 Vermont Stretch Code.

delete and replace R401.2 Compliance.

Projects for both Base Code and Stretch Code shall comply with one of the following:

1. Package Plus Points: Sections R402 through R404.

2. REScheck software: Section R405 and the provisions of Sections R401 through R404 indicated as "Mandatory."

3. Home Energy Rating System (HERS): An energy rating index (ERI) approach in Section R406.

delete and replace R401.3 Certificate of Compliance

An RBES certificate is required to be issued. The certificate should be issued upon completion and before occupancy of any project subject to the Residential Building Energy Standards. A certificate may be issued by a builder, a licensed professional engineer, a licensed architect or an accredited home energy rating organization. If certification is not issued by a licensed professional engineer, a licensed architect or an accredited home energy rating organization, it shall be issued by the builder. Any certification shall certify that residential construction meets the RBES. The Department of Public Service will develop and make available to the public a certificate that lists key features of the RBES. Any person certifying shall use this certificate or one substantially like it to certify compliance with the RBES. Certification shall be issued by completing and signing a certificate and affixing it to the electrical service panel, without covering or obstructing the visibility of the circuit directory label, service disconnect label or other required labels. The certificate shall certify that the residential building has been constructed in compliance with the requirements of the RBES. The person certifying under this subsection shall provide a copy of the certificate to the Department of Public Service and shall assure that a certificate is recorded and indexed in the town land records. A builder may contract with a licensed professional engineer, a licensed architect or an accredited home energy rating organization to issue certification and to indemnify the builder from any liability to the owner of the residential construction caused by noncompliance with the RBES.

Section R 402. Building Thermal Envelope.

delete and replace R402.1 General (Prescriptive).

The building thermal envelope shall meet the requirements of Sections R402.1.1 through R402.1.6.

Exceptions:

The following buildings, or portions thereof separated from the remainder of the building by building thermal envelope assemblies complying with this section shall be exempt from the building thermal envelope provisions of Section R402.

1. Low Energy Use Buildings. Those with a peak design rate of energy usage less than 3.4 Btu/h per square foot of floor space for space conditioning purposes (10.7 W/m [2] or 1.0 watt/ft [2)].

2. Unconditioned Buildings. Those that do not contain conditioned space.

3. Mobile homes. Homes subject to Title VI of the National Manufactured Housing Construction and Safety Standards Act of 1974 (42 U.S.C. §§ 5401-5426).

4. Hunting camps. Residential buildings shall not include hunting camps.

Summer camps. Residential buildings constructed for non-winter occupation with only a biomass (wood) or other on-site renewable heating system.

6. Yurts with only a biomass (wood) or other on-site renewable heating and hot water system.

7. Owner-built homes. Residential construction by an owner, if all of the following apply:

7.1. The owner of the residential construction is the builder, as defined in 30 V.S.A. §51.

7.2. The residential construction is used as a dwelling by the owner.

7.3. The owner in fact directs the details of construction with regard to the installation of materials not in compliance with the RBES.

7.4. The owner discloses in writing to a prospective buyer, before entering into a binding purchase and sales agreement, with respect to the nature and extent of any noncompliance with the RBES.

Any statement or certificate given to a prospective buyer shall itemize how the home does not comply with RBES and shall itemize which measures do not meet the RBES in effect at the time construction commenced.

8. Tiny Houses. While not specifically exempt, tiny houses as defined in Chapter 2 must comply with the envelope, insulation and fenestration requirements in R402.8. All other code provisions are still required with the exception that the mechanical ventilation system does not have to be heat recovery with balanced ventilation and may be exhaust-only.

delete and replace R402.1.1 Vapor retarder.

Wall assemblies and roof or ceiling assemblies which are part of the building thermal envelope shall comply with the vapor retarder requirements of Section R702.7 of the International Residential Code or Section 1405.3 of the International Building Code, as applicable, or with R402.2.15 in this document

delete and replace R402.1.2 Insulation and fenestration criteria.

The building thermal envelope shall comply with one of the following only:

1. Package Plus Points Approach: tables R402.1.2.1, R402.1.2.2 and R402.1.2.3; or

2. U-Factor Alternative Approach: R402.1.4; or

3. Total UA Approach; R402.1.5; or

4. Log Home Approach: R402.1.6.

5. Tiny House Approach: Section R402.8.

Building science principles should be applied in all circumstances. Consult with a building science professional and refer to the Vermont Residential Energy Code Handbook for additional guidance and details.

delete and replace R402.1.2.1 Package Plus Points Approach.

Projects shall comply with Items 1 through 4: for both Base Code and Stretch Code:

1. Select one of the packages listed in Table R402.1.2.1. These standard packages apply to both Base Code and Stretch Code.

Determine the number of points needed to comply with Table R402.1.2.2 based on building size and whether the building needs to comply with Base Code or Stretch Code.

3. Incorporate a sufficient number of points from Table R402.1.2.3 to meet the points requirements from Table R402.1.2.2.

4. Points can only be earned from measures that are not already required in the chosen standard package.

delete and replace R402.1.2.1 Package Plus Points Approach.

Projects shall comply with Items 1 through 4: for both Base Code and Stretch Code:

1. Select one of the packages listed in Table R402.1.2.1. These standard packages apply to both Base Code and Stretch Code.

Determine the number of points needed to comply with Table R402.1.2.2 based on building size and whether the building needs to comply with Base Code or Stretch Code.

3. Incorporate a sufficient number of points from Table R402.1.2.3 to meet the points requirements from Table R402.1.2.2.

4. Points can only be earned from measures that are not already required in the chosen standard package.

add TABLE R402.1.2.1

TABLE R402.1.2.1

INSULATION AND FENESTRATION REQUIREMENTS BY COMPONENT FOR STANDARD PACKAGES FOR BASE CODE AND STRETCH CODE

For SI: 1 foot = 304.8 mm.

a. R-values are minimums. U-factors are maximums. Where insulation is installed in a cavity that is less than the label or design thickness of the insulation, the installed R-value of the insulation shall be not less than the R-value specified in the table. See Section R402.1.4 for alternative compliance methods.

b. These are example wall assemblies. Any wall assembly would need to meet required U values and should consider building science to avoid moisture concerns. See RBES Handbook for building science guidance and more example wall assemblies.

c. The continuous portion of basement and crawlspace insulation can be met through interior, exterior or combination.

d. "4 ft" can be horizontal or vertical coverage including slab edge. "Edge and under" requires complete coverage. Up to 8 lineal feet of exposed slab edge may be insulated to R-10. "Heated slab" are those with embedded radiation.

e. The first value is cavity insulation, the second value is continuous insulation, or "ci", so "20 + 5ci" means R-20 cavity insulation plus R-5 continuous insulation.

f. Consider building science principles in all design and construction. Buildings should be designed and constructed recognizing principles behind moisture vapor control approaches for cold climates. Maintain the envelope assembly's ability to adequately dry in at least one direction by not installing low-perm vapor retarder materials (e.g., vapor barrier) on both sides of an assembly, seek to optimize the assembly's ability to dry, and limit the potential for wetting. (From Applied Building Technologies Group, LLC).

g. If there is insufficient space in the eaves, installing R-38 over the top of exterior walls shall be deemed to satisfy the requirement for R-49 insulation provided the rest of the ceiling is R-49. (See Section R402.2.1). Multifamily buildings using continuous insulation with a maximum U-factor of 0.023 or tapered insulation with an average U-factor of 0.023 for the ceiling assembly satisfies this requirement. A minimum value of R-12 is required for tapered insulation.

h. "ACH50" = air changes per hour at 50 Pascals building pressure as measured with a blower door. CFM50/Sq. Ft. of Building Shell = amount of air leakage (in cubic feet per minute, or CFM) that leaks out of each square foot of the exterior surface all six sides of the building measured at 50 Pascals of pressure with a blower door.

i. Installing R-38 over the top of exterior walls where insulation is compressed in the eaves shall be deemed to satisfy the requirement for R-44 where there is insufficient space in framing rafters for more than R-38 provided the rest of the ceiling is R-44. See R402.2.2 for more detail.

delete R402.1.2.2 Required Points by Building Size.

add R402.1.2.2 Required points by building or addition size.

Determine the number of points required by building or addition size from Table R402.1.2.2. Building size for this table is determined by the finished conditioned floor area per dwelling unit inside the building thermal envelope, including unfinished basements and storage/utility spaces.

The Multifamily less than 1,250 square feet (185.8 m) and 1,2500-2,500 square feet point requirement categories cannot be used for semi-detached (semi-attached, side-by-side), row houses, and townhouses, as defined as single-family dwellings in Section R202, General Definitions. Multifamily dwelling unit size is based on the average finished conditioned floor area dwelling size for the building, excluding common areas, hallways, stairwells, etc..

delete and replace TABLE R402.1.2.2

TABLE R402.1.2.2

REQUIRED POINTS BY BUILDING SIZE FOR BASE CODE AND STRETCH CODE

delete and replace TABLE R402.1.2.3

TABLE R402.1.2.3

POINTS BY COMPONENT FOR BASE CODE AND STRETCH CODE

For SI: 1 foot = 304.8 mm.

a. Heating and cooling system points are only available if all components of primary systems comply.

b. "OR" indicates that points are not additive; one component OR the following one can be selected, but not both.

c. Applies to new construction only.

d. https://www.energystar.gov/products/spec/central_air_conditioner_and_air_source_heat_pump_specification_version_6_0_pd

e. Certification standard as of 1/1/2019 or later. "WERS" = Water Efficiency Rating Score http://www.wers.us/. EPA WaterSense compliance for all water products: https://www.epa.gov/watersense.

RESNET Water Energy Rating Index compliant: http://www.resnet.us/professional/about/resnet_to_develop_water_efficiency_rating_system.

delete and replace R402.1.3 R-value computation.

Insulation material used in layers, such as framing cavity insulation, or continuous insulation Cavity insulation alone shall be used to determine compliance with the cavity insulation R-value requirements in Tables R402.1.1 and R402.1.3. Where cavity insulation is installed in multiple layers, the R-values of the cavity insulation layers shall be summed to compute the corresponding component R-value determine compliance with the cavity insulation R-value requirements. The manufacturer's settled R-value shall be used for blown insulation. Continuous insulation (ci) alone shall be used to determine compliance with the continuous insulation R-value requirements in Tables R402.1.1 and R402.1.3. Where continuous insulation is installed in multiple layers, the R-values of the continuous insulation layers shall be summed to determine compliance with the continuous insulation R-value requirements. Cavity insulation R-values shall not be used to determine compliance with the continuous insulation R-value requirements in Tables R402.1.1 and R402.1.3. Computed R-values shall not include an R-value for other building materials or air films. Where insulated siding is used for the purpose of complying with the continuous insulation requirements of Tables R402.1.1 and R402.1.3, the manufacturer's labeled R-value for insulated siding shall be reduced by R-0.6.

Average continuous insulation R-values across flat roofs meet the requirements of Tables R402.1.2.1 and R402.1.2.3

delete and replace R402.1.4 U-factor alternative.

An assembly with a U-factor equal to or less than that specified in Table R402.1.4 shall be permitted as an alternative to the R-values in Tables R402.1.2.1 and R402.1.2.3. The building must still comply with Tables R402.1.2.1, R402.1.2.2, and Table R402.1.2.3.

An assembly with a U-factor equal to or less than that specified in Table R402.1.4 shall be permitted as an alternative compliance method with no Table R402.1.2.3 points required, provided that (a) airtightness is less than or equal to 0.15 CFM50/Sq. Ft. of Building Shell (~2 ACH50) tested, and (b) the ventilation system complies with section R304.

Exception: The following are not required to comply with the airtightness limit or the balanced ventilation system and heat recovery efficiency requirements.

Alterations.

2. Additions complying with this code based on the attributes of the addition alone using the U-factor alternative.

delete and replace TABLE R402.1.4

TABLE R402.1.4

EQUIVALENT U-FACTORS

For SI: 1 foot = 304.8 mm.

a. Nonfenestration U-factors shall be obtained from measurement, calculation or an approved source.

b. When more than half the insulation is on the interior, the mass wall U-factors shall be a maximum of 0.057.

c. Airtightness of less than or equal to 0.15 CFM50/Sq. Ft. of Building Shell (~2 ACH50) tested and balanced ventilation system compliant with R304, or the building must comply with Tables R402.1.2.2 and R402.1.2.3.

delete and replace R402.1.5 Total UA alternative.

Where the total building thermal envelope UA, the sum of U-factor times assembly area, is less than or equal to the total UA resulting from multiplying the U-factors in Table R402.1.4 by the same assembly area as in the proposed building, the building shall be considered to be in compliance provided that (a) airtightness is less than or equal to 0.15 CFM50/Sq. Ft. of Building Shell (~2 ACH50) tested, and (b) the ventilation system is: balanced, complying with R304. The UA calculation shall be performed using a method consistent with the ASHRAE Handbook of Fundamentals and shall include the thermal bridging effects of framing materials.

Exception: The following are not required to comply with the airtightness limit (a) or the balanced ventilation system and heat recovery efficiency requirements (b).

Alterations.

2. Additions complying with this code based on the attributes of the addition alone using the Total UA alternative.

delete and replace R402.1.6 Log homes.

Log homes shall comply by doing all of the following steps:

1. Design log home in accordance with ICC 400--2022 or to the requirements of Table R402.1.6.

2. Determine the number of points needed to comply, using Table R402.1.2.2 based on building size.

3. Incorporate a sufficient number of points from Table R402.1.2.3 to meet the points requirement from Table R402.1.2.2.

delete and replace TABLE R402.1.6

delete and replace R402.2.1 Ceilings with attic spaces.

Where Section R402.1.2 would require R-49 insulation in the ceiling, installing R-38 over the top of exterior walls where insulation is compressed in the eaves shall be deemed to satisfy the requirement for R-49 insulation provided that the balance of the ceiling is at R-49. Where Section R402.1 would require R-60 insulation in the ceiling, installing R-49 over the top of exterior walls where insulation is compressed in the eaves shall be deemed to satisfy the requirement for R-60 provided the balance of the ceiling is at R-60. This reduction shall not apply to the U-factor alternative approach in Section R402.1.4 and the total UA alternative in Section R402.1.5.

delete and replace R402.2.2 Ceilings without attic spaces (slopes).

Where Section R402.1.2 would require R-49 insulation in the ceiling, installing R-38 over the top of exterior walls where insulation is compressed in the eaves shall be deemed to satisfy the requirement for R-49 insulation provided that the balance of the ceiling is at R-49. Where Section R402.1 would require R-60 insulation in the ceiling, installing R-49 over the top of exterior walls where insulation is compressed in the eaves shall be deemed to satisfy the requirement for R-60 This reduction shall not apply to the U-factor alternative approach in Section R402.1.4 and the Total UA alternative in Section R402.1.5.

delete and replace R402.2.3 Eave baffle.

For air-permeable insulations in vented attics, a baffle shall be installed adjacent to soffit and eave vents. Baffles shall maintain a net free area opening equal to or greater than the net free area of the vent. The baffle shall extend over the top of the attic insulation. The baffle shall be permitted to be any solid material.

The baffle shall be installed to the outer edge of the exterior wall top plate so as to provide maximum space for attic insulation coverage over the top plate. Where soffit venting is not continuous, baffles shall be installed continuously to prevent ventilation air in the eave soffit from bypassing the baffle.

delete and replace R402.2.4 Access hatches and doors.

Access hatches and doors from conditioned spaces to unconditioned spaces such as attics and crawl spaces shall be weatherstripped and insulated to the same R-value required by Section R402 for the wall or ceiling in which they are installed. Access shall be provided to all equipment that prevents damaging or compressing the insulation. A wood-framed or equivalent baffle or retainer is required to be provided when loose-fill insulation is installed, the purpose of which is to prevent the loose-fill insulation from spilling into the living space when the attic access is opened, and to provide a permanent means of maintaining the installed R-value of the loose-fill insulation.

Exception: Vertical doors that provide access from conditioned to unconditioned spaces shall be permitted to meet the fenestration requirements of Table R402.1.2.1.

The reduction shall not apply to the total UA alternative in Section R402.1.5.

delete and replace R402.2.6 Steel-frame ceilings, walls and floors.

Steel-frame ceilings, walls, and floors shall comply with the U-factor requirements of Table R402.1.2.1. The calculation of the U-factor for steel-framed ceilings and walls in an envelope assembly shall be determined in accordance with AISI S250 as modified herein.

1. Where the steel-framed wall contains no cavity insulation and uses continuous insulation to satisfy the U-factor maximum, the steel-framed wall member spacing is permitted to be installed at any on center spacing.

2. Where the steel-framed wall contains framing spaced at 24 inches (610 mm) on center with a 23% framing factor or framing spaced at 16 inches (400 mm) on center with a 25% framing factor, the net lower framing member spacing input values shall be used when calculating using AISI S250.

3. Where the steel-framed wall contains less than 23% froaming factors the AISI S250 shall be used without any modifications.

4. Where the steel-framed wall contains other than standard C-shape framing members the AISI

S250 calculation option for other than standard C-shape framing is permitted to be used.

delete TABLE R402.2.6

delete and replace R402.2.8 Floors.

Floor framing-cavity insulation shall be installed to maintain permanent contact with the underside of the subfloor decking.

Exception: The floor framing-cavity insulation shall be permitted to be in contact with the topside of sheathing or continuous insulation installed on the bottom side of floor framing where combined with insulation that meets or exceeds the minimum wood frame wall R-value in Table 402.1.2.1 and that extends from the bottom to the top of all perimeter floor framing members.

delete and replace R402.2.9 Basement walls.

Walls associated with conditioned basements shall be insulated from the top of the basement wall down to 10 feet (3048 mm) below grade or to the basement floor, whichever is less. Walls associated with unconditioned basements shall meet this requirement unless the floor overhead is insulated in accordance with Sections R402.1.2.1 and R402.2.8.

delete and replace R402.2.10 Slab-on-grade floors.

Slab-on-grade floors with a floor surface less than 12 inches (305 mm) below grade shall be insulated in accordance with Table R402.1.2.1. The insulation shall extend downward from the top of the slab on the outside or inside of the foundation wall. Insulation located below grade shall be extended the distance provided in Table R402.1.2.1 by any combination of vertical insulation, insulation extending under the slab or insulation extending out from the building. Insulation extending away from the building shall be protected by pavement or by not less than 10 inches (254 mm) of soil. The top edge of the insulation installed between the exterior wall and the edge of the interior slab shall be permitted to be cut at a 45-degree (0.79 rad) angle away from the exterior wall. Slab-edge insulation is not required in jurisdictions designated by the code official or authority having jurisdiction, where one exists, as having a very heavy termite infestation.

delete and replace R402.2.13 Sunroom and conditioned garage insulation.

Sunrooms enclosing conditioned space and conditioned garages shall meet the insulation requirements of this code.

Exception: For sunrooms and conditioned garages provided with thermal isolation, and enclosing conditioned space, the following exceptions to the insulation requirements of this code shall apply:

1. The minimum ceiling insulation R-value shall be R-38.

2. The minimum wall insulation R-value shall be R-20. Walls separating a sunroom or heated garage with a thermal isolation from conditioned space shall comply with the building thermal envelope requirements of this code.

add R402.2.16 Building Science

Consider building science principles in all design and construction. Buildings should be designed and constructed recognizing principles behind moisture vapor control approaches for cold climates. Maintain the envelope assembly's ability to adequately dry in at least one direction by not installing low-perm vapor retarder materials (e.g., vapor barrier) on both sides of an assembly, seek to optimize the assembly's ability to dry, and limit the potential for wetting. (From Applied Building Technologies Group, LLC).

delete and replace R402.3 Fenestration.

In addition to the requirements of Section R402.1.2.1, fenestration shall comply with Sections R402.3.1 through R402.3.5.

delete and replace R402.3.2 Glazed fenestration SHGC.

An area-weighted average of fenestration products more than 50-percent glazed shall be permitted to satisfy the SHGC requirements.

Dynamic glazing shall be permitted to satisfy the SHGC requirements of Table R402.1.2.1 provided the ratio of the higher to lower labeled SHGC is greater than or equal to 2.4, and the dynamic glazing is automatically controlled to modulate the amount of solar gain into the space in multiple steps.

Dynamic glazing shall be considered separately from other fenestration, and area-weighted averaging with other fenestration that is not dynamic glazing shall not be permitted.

Exception: Dynamic glazing is not required to comply with this section when both the lower and higher labeled SHGC already comply with the requirements of Table R402.1.2.1.

delete and replace R402.3.3 Glazed fenestration exemption.

Up to 15 square feet (1.4 m) of glazed fenestration per dwelling unit shall be permitted to be

exempt from U-factor and SHGC requirements in Section R402.1.2.1. This exemption shall not apply

to the U-factor alternative approach in Section R402.1.4 and the Total UA alternative in Section R402.1.5.

delete and replace R402.3.4 Opaque door exemption.

2. One side-hinged opaque door assembly up to 24 square feet (2.22 m) in area is exempted from the U-factor requirement in Section R402.1.2.1. This exemption shall not apply to the U-factor alternative approach in Section R402.1.4 and the total UA alternative in Section R402.1.5.

delete and replace R402.3.5 Sunroom and conditioned garage fenestration.

Sunrooms and conditioned garages enclosing conditioned space shall meet the fenestration requirements of this code.

Exception: sunrooms and conditioned garages with thermal isolation and enclosing conditioned space, the fenestration U-factor shall not exceed 0.30 and the skylight U-factor shall not exceed 0.41.

New fenestration separating a sunroom or heated garage with thermal isolation from conditioned space shall comply with the building thermal envelope requirements of this code.

delete and replace R402.4 Air leakage.

The building thermal envelope shall be constructed to limit air leakage in accordance with the requirements of this Section.

delete and replace R402.4.1 Building thermal envelope.

The building thermal envelope shall comply with Sections R402.4.1.1 through R402.4.1.3. The sealing methods between dissimilar materials shall allow for differential expansion and contraction.

delete and replace R402.4.1.1 Installation.

The components of the building thermal envelope as listed in Table R402.4.1.1 shall be installed in accordance with the manufacturer's instructions and the criteria listed in Table R402.4.1.1, as applicable to the method of construction.

delete and replace TABLE R402.4.1.1

TABLE R402.4.1.1

AIR BARRIER, AIR SEALING AND INSULATION INSTALLATION

(continued)

TABLE R402.4.1.1--continued

AIR BARRIER AND INSULATION INSTALLATION

a. In addition, inspection of log walls shall be in accordance with the provisions of ICC-400--2022

b. Air barrier and insulation full enclosure is not required in unconditioned/ventilated attic spaces and at rim joints.

delete and replace R402.4.1.2 Air Leakage Testing. The building or dwelling unit shall be tested and verified as having an air leakage rate not exceeding two (2) air changes per hour or 0.15 CFM50/Sq. Ft. Building Shell area of all six sides of the building. Testing shall be conducted in accordance with ANSI/RESNET/ICC 380, ASTM E779 or ASTM E1827 and reported at a pressure of 0.2 inches w.g. (50 Pascals). Multifamily buildings shall comply with CBES C402.4. Testing and verification shall be conducted by an applicable Building Performance Institutes (BPI) Professional, a Home Energy Rating System (HERS) Energy Rater, HERS Field Inspector, or a Vermont Department of Public Service approved air leakage tester. A written report of the results of the test shall be signed by the party conducting the test. Testing shall be performed at any time after creation of all penetrations of the building thermal envelope. During testing:

Exterior windows and doors, fireplace and stove doors shall be closed, but not sealed, beyond the intended weatherstripping or other infiltration control measures.

2. Dampers including exhaust, intake, makeup air, backdraft and flue dampers shall be closed, but not sealed beyond intended infiltration control measures.

3. Interior doors, where installed at the time of the test, shall be open.

Exterior or interior terminations for continuous ventilation systems shall be sealed.

5. Heating and cooling systems, where installed at the time of the test, shall be turned off.

6. Supply and return registers, where installed at the time of the test, shall be fully open.

7. Plumbing and drainage traps shall be filled with water as normally found, but not otherwise sealed.

Mechanical ventilation shall be provided in accordance with Section M1505 of the International Residential Code or Section 403.3.2 of the International Mechanical Code, as applicable, or with other approved means of ventilation.

delete and replace R402.4.1.3 Reporting.

Air leakage testing shall be reported on the RBES Certificate in units of air changes per hour at 50 Pascals (ACH50) and CFM50/Sq. Ft. Building Shell area of all six sides of the building.

delete and replace R402.4.2 Fireplaces.

New wood-burning fireplaces shall have tight-fitting doors and outdoor combustion air. Where using tight-fitting doors on factory-built fireplaces listed and labeled in accordance with UL 127, the doors shall be tested and listed for the fireplace. Where using tight-fitting doors on masonry fireplaces, the doors shall be listed and labeled in accordance with UL 907 2019.

add R402.4.6 Electrical and communication outlet boxes (air-sealed boxes).

Electrical and communication outlet boxes installed in the building thermal envelope that are through or outside the building air barrier shall be sealed to limit air leakage between conditioned and unconditioned spaces. Electrical and communication outlet boxes shall be tested in accordance with NEMA OS 4, Requirements for Air-Sealed Boxes for Electrical and Communication Applications and shall have an air leakage rate of not greater than 2.0 cubic feet per minute (0.944 L/s) at a pressure differential of 1.57 psf (75 Pa). Electrical and communication outlet boxes shall be marked "NEMA OS 4" or "OS 4" in accordance with NEMA OS 4. Electrical and communication outlet boxes shall be installed per the manufacturer's instructions and with any supplied components required to achieve compliance with NEMA OS 4.

delete and replace R402.5 Maximum fenestration U-factor and SHGC ().

The area-weighted average maximum fenestration U-factor permitted using tradeoffs from Section R402.1.5 or R405 shall be 0.30 for vertical fenestration, and 0.41 for skylights.

add R402.7 Solar-ready zone.

add R402.7.1 General.

Solar-ready zone is required for Stretch Code but is optional for Base Code. Points are available for meeting the solar-ready zone requirements for Base Code.

For Stretch Code, new detached one- and two-family dwellings, and multiple single-family dwellings (townhouses) with not less than 600 square feet (55.74 m2) of roof area oriented between 110 and 270 degrees of true north shall comply with this Section.

Exceptions:

1. New residential buildings with a permanently installed on-site renewable energy system.

2. A building where all areas of the roof that would otherwise meet the requirements of Section R407.5 are in full or partial shade for more than 70 percent of daylight hours annually.

3. Buildings and structures as designed and shown in construction documents that do not meet the conditions for a solar-ready zone area.

4. Buildings with possible location(s) for ground mounted systems identified in the submitted construction documents. Buildings claiming this exception must either install appropriate electrical conduit to the site of the proposed ground mounted solar array or include a solar site evaluation that supports the siting of the proposed ground mounting location.

Multifamily buildings shall comply with CBES C402.5.

add R402.7.2 Construction document requirements for solar-ready zone.

Construction documents shall indicate the solar-ready zone where applicable.

add R402.7.3 Solar-ready zone area.

The total solar-ready zone area shall consist of an area not less than 300 square feet (27.87 m) per dwelling exclusive of mandatory access or setback areas. New multiple single-family dwellings (townhouses) three stories or less in height above grade plane and with a total floor area less than or equal to 2,000 square feet (185.8 m) per dwelling shall have a solar-ready zone area of not less than 150 square feet (13.94 m) per dwelling. The solar-ready zone area shall be not less than 40 percent of the roof area calculated as the horizontally projected gross roof area less the area covered by skylights, occupied roof decks, vegetative roof areas and mandatory access or set back areas as required by the International Fire Code. The solar-ready zone shall be composed of areas not less than 5 feet (1524 mm) in width and not less than 80 square feet (7.44 m) exclusive of access or required set back areas.

For ground-mounted systems, possible locations of the panels must be identified in the submitted construction documents and be supported by a solar site evaluation. At least one potential location must be identified in the construction documents for the future installation of the panels.

add R402.7.4 Obstructions.

Solar-ready zones shall consist of an area free from obstructions, including but not limited to vents, chimneys, and roof-mounted equipment.

add R402.7.5 Shading.

The solar-ready zone shall be set back from any existing or new permanently affixed object on the building or site that is located south, east or west of the solar zone a distance not less than two times the object's height above the nearest point on the roof surface. Such objects include, but are not limited to, taller portions of the building itself, parapets, chimneys, antennas, signage, rooftop equipment, trees, and roof plantings.

add R402.7.6 Capped roof penetration sleeve.

A capped roof penetration sleeve shall be provided adjacent to a solar-ready zone located on a roof slope of not greater than 1 unit vertical in 12 units horizontal (8-percent slope). The capped roof penetration sleeve shall be sized to accommodate the future photovoltaic system conduit, but shall have an inside diameter of not less than 11/4 inches (32 mm).

add R402.7.7 Roof load documentation.

The structural design loads for roof dead load and roof live load to support the solar system shall be clearly indicated on the construction documents.

add R402.7.8 Interconnection pathway.

Construction documents shall indicate pathways for routing of conduit (or plumbing for solar thermal systems) from the solar-ready zone to the electrical service panel or service hot water system. Alternatively, install two 1-inch minimum diameter EMT conduits from the main electrical panel location to the attic or other area easily accessible to the solar array's proposed location. Conduits for future solar installations are to be capped, airtight and labeled at both ends.

add R402.7.9 Electrical service reserved space.

The main electrical service panel shall have a reserved space to allow installation of a dual pole circuit breaker for future solar electric installation and shall be labeled "For Future Solar Electric." The reserved space shall be positioned at the opposite (load) end from the input feeder location or main circuit location. Note: this requirement is in addition to the electrical service reserved space for electric vehicle charging. This requirement is only for the building master panel and not individual dwelling unit panels in the case of multifamily buildings.

add R402.7.10 Electrical energy storage system-ready area.

The floor area of the electrical energy storage system-ready area shall be not less than 2 feet (610 mm) in one dimension and 4 feet (1219 mm) in another dimension and located in accordance with Section 1207 of the International Fire Code. The location and layout diagram of the electrical energy storage system-ready area shall be indicated on the construction documents.

add R402.7.11 Construction documentation certificate.

A permanent certificate, indicating the solar-ready zone and other requirements of this section, shall be posted near the electrical distribution panel, water heater or other conspicuous location by the builder or registered design professional.

add R402.8 Tiny houses.

Tiny Houses as defined in Chapter 2 must comply with the envelope, insulation and fenestration requirements below. All other code provisions are still required.

Tiny houses require the following:

• ceiling flat attic U-0.033 (R-30);

• ceiling slope U-0.04 (R-24);

• above grade walls U-0.08 (R-13);

• frame floors U-0.05 (R-21);

• basement/crawl space walls R-20 continuous (ci) or R13+10ci;

• slab on grade R-20 for 4' on edge or under, OR R-15,4'(edge) + R-15 (under entire slab);

• heated slab on grade R-20,4' (edge) + R-15 (under entire slab);

• windows U-0.27;

• doors U-0.37;

• air leakage 0.15 CFM50/Sq. Ft. of Building Shell (~2 ACH50);

• ducts inside thermal boundary.

Compliance with all other provisions of this code is required.

Exception: Mechanical ventilation system for tiny houses is not required to be a balanced ventilation system and may be exhaust-only.

Section R 403. Systems.

delete and replace R403.1.1 Programmable thermostat.

The thermostat controlling the primary heating or cooling system of the dwelling unit shall be capable of controlling the heating and cooling system on a daily schedule to maintain different temperature set points at different times of the day and different days of the week. This thermostat shall include the capability to set back or temporarily operate the system to maintain zone temperatures down to 55°F (13°C) or up to 85°F (29°C). The thermostat shall initially be programmed by the manufacturer with a heating temperature set point no higher than 70°F (21°C) and a cooling temperature set point no lower than 78°F (26°C). Adjustments to these settings for elderly, disabled or those with special needs is permissible.

Exception: The following are allowed only where a 5-wire connection to thermostat location is provided:

1. Radiant floor, wall, ceiling and/or beam system on dedicated zone.

Cold-climate heat pump not designed for setbacks.

3. Wi-Fi or "smart" Internet-connected thermostats.

delete R403.1.2 Heat pump supplementary heat.

add R403.1.2 Ductless heat pump supplementary heat.

Ductless heat pumps shall not have integrated supplementary electric-resistance heat other than that provided for frost control. See Section R404.4 for guidance on electric-resistance heating equipment other than heat pumps.

delete and replace R403.3 Ducts.

Ducts and air handlers for space conditioning shall be in accordance with Sections R403.3.1 through R403.3.2.

delete R403.3.1 Ducts located outside conditioned space.

add R403.3.1 Duct placement.

All ducts and air handlers shall be located within conditioned space. delete R403.3.3 Duct testing.

delete R403.3.4 Duct leakage

delete R403.3.5 Building cavities

delete R403.3.6 Ducts buried within ceiling insulation.

delete R403.3.7 Ducts located in conditioned space.

delete and replace R403.4 Mechanical system piping insulation (Mandatory).

Mechanical system piping designed to carry fluids above 105°F (41°C) or below 55°F (13°C) shall be located within the building thermal envelope and insulated to a minimum of R-4.

delete and replace R403.5.1.1 Circulation systems.

Where installed, heated water circulation systems shall be provided with a circulation pump. The system return pipe shall be a dedicated return pipe or a cold-water supply pipe. Gravity and thermosyphon circulation systems shall be prohibited. Controls for circulating hot water system pumps shall automatically turn off the pump when the water in the circulation loop is at the desired temperature and when there is no demand for hot water. The controls shall limit the temperature of the water entering the cold-water piping to not greater than 104°F (40°C).

delete and replace R403.5.3 Hot water pipe insulation ().

Insulation for service hot water pipe with a minimum thermal resistance (R-value) of R-4 shall be applied to the following:

1. Piping/ inch (19.1 mm) and larger in nominal diameter located inside the conditioned space

2. Piping serving more than one dwelling unit.

3. Piping located outside the conditioned space.

4. Piping from the water heater to a distribution manifold.

5. Piping located under a floor slab.

6. Buried piping.

7. Supply and return piping in circulation and recirculation systems other than cold water pipe return demand recirculation systems.

R403.6 Mechanical ventilation.

Follow the mechanical ventilation requirements in R304.

delete R403.6.1 Heat or energy recovery ventilation.

delete R403.6.1 Whole-house mechanical ventilation system fan efficacy.

delete TABLE R403.6.1

delete and replace R403.8 Systems serving multiple dwelling units.

Systems serving multiple dwelling units shall comply with Sections C403 and C404 of the 2024 Vermont Commercial Building Energy Standards (CBES) in lieu of Section R403 but will not be subject to the additional requirements outlined in Tables C406.1.1 and Table 406.1.2.

delete and replace R403.10.1 Residential pools and permanent residential spas.

Where installed, the energy consumption of residential swimming pools and permanent residential spas shall be controlled in accordance with the requirements of APSP 15.

delete and replace R403.10.4 Covers.

Outdoor heated pools and outdoor permanent spas shall be provided with an insulated vaporretardant cover of at least R-12 or other approved vapor-retardant means.

Exception: Where more than 75 percent of the energy for heating, computed over an operation season of not fewer than 3 calendar months, is from site-recovered energy, such as from a heat pump or solar energy source, covers or other vapor-retardant means shall not be required.

Section R 404 Electrical Power and Lighting Systems.

delete and replace R404.1 Lighting equipment.

All permanently installed lighting fixtures, excluding kitchen appliance lighting fixtures, shall contain only high-efficacy lighting sources.

delete R404.1.1 Lighting equipment

add R404.1.1 Exterior lighting.

Exterior lighting for residential buildings shall comply with Sections C405.5 (Exterior Lighting Power Requirements) of the Vermont Commercial Building Energy Standards (CBES).

Exceptions:

Detached one- and two-family dwellings.

2. Townhouses.

3. Solar-powered lamps not connected to any electrical service.

4. Luminaires controlled by a motion sensor.

Lamps and luminaires that comply with Section R404.1.

delete and replace R404.1.2 Lighting equipment for multifamily spaces

Multifamily buildings three-stories or less with common areas, stairwells, vestibules, lobbies, parking garages, and exterior parking areas and drives must meet the lighting power density (LPD) specifications of the Vermont Commercial Building Energy Standards (CBES). For parking garages, see Section C405.3.2; for uncovered parking areas and drives, see Section C405.5.2.

add R404.1.3 Fuel gas lighting equipment.

Fuel gas lighting systems shall not be permitted.

add R404.1.44 Exterior lighting controls.

Where the total permanently installed exterior lighting power is greater than 30 watts, the permanently installed exterior lighting shall comply with the following

1. Lighting shall be controlled by a manual on and off switch which permits automatic shut-off

actions. Exception: Lighting serving multiple dwelling units.

2. Lighting shall be automatically shut off when daylight is present and satisfies the lighting needs.

3. Controls that override automatic shut-off actions shall not be allowed unless the override

automatically returns automatic control to its normal operation within 24 hours.

For multifamily buildings, follow C405.2.7 (Exterior Lighting Controls).

delete R404.2 Electric resistance heating equipment.

add R404.2 Electric heating equipment.

Heat pumps shall be certified cold-climate heat pumps only and shall have controls that, except during defrost, prevent supplementary electric heat operation where the heat pump compressor can meet the heating load.

Building heating with electric-resistance heating equipment is prohibited.

Exceptions:

Replacement of existing electrical resistance units.

2. Limited areas where other heating sources are cost prohibitive or impractical (for example, a small interior space such as a bathroom or stairwell, which is distant from the distribution system).

3. Buildings with cold-climate heat pump(s) as the primary heating system, provided that:

a. The supplemental electric-resistance heat is controlled to prevent it from operating at an outside air temperature of 5°F or higher.

b. The building has a tested air tightness of less than or equal to 0.15 CFM50/Sq. Ft. of Building Shell (~2 ACH50).

4. Multifamily buildings with heating loads less than or equal to 6.0 Btu/h/ft at design temperature.

Note: Buildings served by the Burlington Electric Department (BED) must also receive approval from BED before installing electric resistance heating equipment.

delete and replace R404.3 Electric vehicle charging.

One Electric Vehicle Charging - Level 2 Capable parking space or Electric Vehicle Charging - Level 2 EVSE is required for new construction based on Table R404.3.

Exception: Electric vehicle parking spaces are not required if one of the following conditions apply:

1. Parking spaces intended exclusively for storage of vehicles for retail sale or vehicle service.

2. Parking spaces are separated from the meter by a public right-of-way

Parking spaces which are limited to parking durations of less than one hour.

2. EV Capable Spaces are not required where no parking spaces are provided.

Parking spaces with electric vehicle supply equipment (EVSE) shall be marked for EV use only.

Exception: The number of parking spaces with EVSE that are marked for "EV use only" need not exceed the number of EV cars driven by occupants of the building. This exception does not reduce the number of EVSE spaces required, just the number that are marked for EV use only. delete and replace

TABLE R404.3 REQUIRED LEVEL 2 CAPABLE ELECTRIC VEHICLE CHARGING PARKING SPACES FOR ALL NEW BUILDINGS (BASE CODE and STRETCH CODE)

For multifamily building garage or covered parking, provide on electrical drawings the appropriate sized pathway to the building electrical room to accommodate a future electrical upgrade for Level 2 EVSE electric vehicle charging; provide adequate wall and floor space in the building electrical room for future EV charging related electrical equipment; provide the appropriate sized pathways to exterior on-grade surface parking spaces for future Level 2 EVSE electric vehicle charging; provide a line diagram on the electrical drawings demonstrating a pathway for future Level 2 EVSE electric vehicle charging. Quantity of future Level 2 EVSE electric vehicle charging stations shall be as required by Table R404.3. add R404.4 200 Amp Electrical Service. Each new building, except for individual multifamily units, shall be supplied with at least 200 amp electrical service in anticipation of increased electrical services that will need to be provided in the future. add R404.5 Dwelling electrical meter. Each residential unit and each dwelling unit located in a Group R-2 building shall have a separate electrical meter. Exception: Buildings where a majority of the living units serve tenants at or below 80 percent of area median income. add R404.6 Electrical transformers. Low-voltage dry-type distribution electric transformers shall meet the minimum efficiency requirements of Table R405.6 as tested and rated in accordance with the test procedure listed in DOE 10 CFR 431. The efficiency shall be verified through certification under an approved certification program or, where a certification program does not exist, the equipment efficiency ratings shall be supported by data furnished by the transformer manufacturer. Exception: The following transformers are exempt:

Transformers that meet the Energy Policy Act of 2005 exclusions based on the DOE 10 CFR 431 definition of special purpose applications.

2. Transformers that meet the Energy Policy Act of 2005 exclusions that are not to be used in general purpose applications based on information provided in DOE 10 CFR

4. Transformers that meet the Energy Policy Act of 2005 exclusions with multiple voltage taps where the highest tap is not less than 20 percent more than the lowest tap.

5. Drive transformers.

6. Rectifier transformers.

7. Auto-transformers.

8. Uninterruptible power system transformers.

9. Impedance transformers.

10. Regulating transformers.

11. Sealed and nonventilating transformers.

Machine tool transformers.

Welding transformers.

13. Grounding transformers.

14. Testing transformers.

TABLE R405.6

MINIMUM NOMINAL EFFICIENCY LEVELS FOR 10 CFR 431 LOW-VOLTAGE DRY-TYPE DISTRIBUTION TRANSFORMERS

a. kiloVolt-Amp rating.

b. Nominal efficiencies shall be established in accordance with the DOE 10 CFR 431 test procedure for low-voltage dry-type transformers.

Section R 405 Alternative Using Reschecktm Software.

delete and replace R405.2 Mandatory requirements.

Compliance with this section requires that the applicable provisions in Sections R401.3, R402, R403, R404, and Chapter 3 be met.

modify "SECTION R406 ENERGY RATING INDEX COMPLIANCE ALTERNATIVE" to "SECTION R406 ENERGY RATING INDEX / HOME ENERGY RATING SYSTEM COMPLIANCE ALTERNATIVE"

Section R 406 Energy Rating Index/ Home Energy Rating System Compliance Alternative.

delete and replace R406.2 Mandatory requirements.

Compliance with this section requires that the applicable provisions in Sections R401.3, R402, R403 and R404 be met. The building thermal envelope shall be greater than or equal to levels of efficiency and solar heat gain coefficients in Table 402.1.2 of the 2009 International Energy Conservation Code for Climate Zone 6.

delete R406.4 ERI-based compliance.

TABLE R406.4

ERI/HERS COMPLIANCE FOR BASE CODE AND STRETCH CODE

delete R406.6.3 Additional documentation.

add R406.6.3 Renewable Energy Certificate (REC) Documentation.

Where on-site renewable energy is included in the calculation of an ERI, one of the following forms of documentation shall be provided to the code official or authority having jurisdiction, where one exists:

1. Substantiation that the RECs associated with the on-site renewable energy are owned by, or retired on behalf of, the homeowner.

2. An executed contract that conveys to the homeowner the RECs associated with the on-site renewable energy, or conveys to the homeowner an equivalent quantity of RECs associated with other renewable energy

add R406.6.4 Additional documentation.

The code official or authority having jurisdiction, where one exists shall be permitted to require the following documents:

1. Documentation of the building component characteristics of the ERI reference design.

2. A certification signed by the builder providing the building component characteristics of the rated design.

3. Documentation of the actual values used in the software calculations for the rated design.

Section R 407 Vermont Stretch Code.

delete and replace R407.2 Compliance

Compliance for Stretch Code shall be documented through either Section R402.1.2.1 "Package Plus Points Approach" or Section R406 "Energy Rating Index / Home Energy Rating System (HERS) Compliance Approach".

For both Base Code and Stretch Code compliance, in Section R402.1.2.1 "Package Plus Points Approach", the same standard package is used. Stretch Code then requires more Points than the Base Code. For ERI/HERS compliance, a lower HERS Index is required for Stretch Code than for Base Code.

delete R407.2.1 Package Plus Points Approach.

delete TABLE R407.2.1.1 INSULATION AND FENESTRATION REQUIREMENTS BY COMPONENT FOR STRETCH PACKAGES

delete R407.2.1.2 Required points by building size.

delete TABLE R407.2.1.2

delete R407.2.1.3 Points by Component.

delete TABLE R407.2.1.3

delete R407.2.2 ERI-based compliance for Stretch Code.

delete R407.3 Air Leakage Testing for Stretch Code.

delete R407.4 Electric vehicle charging

delete R407.5 Solar Ready Zone for Stretch Code.

Section R 408 Insulation Embodied Carbon Emissions.

R408.1 Insulation Embodied Carbon

In order to earn Points from Table 402.1.2.3, complete calculation Table 408.1.1 to summarize estimated embodied carbon emissions from insulation materials used in the project. The output metric for this measure shall be global warming potential (GWP) intensity, capturing insulation GWP per conditioned square foot of project area. To complete the basic calculation, project teams shall provide the following information for foundation, wall, and roof insulation materials:

Insulation material type

2. Product R-value

3. Total surface area (ft2)

4. Default, industry-average GWP value, from Table 408.1.2 or GWP values from

Type III Product-specific Environmental Product Declaration (EPD)

5. Total project area (conditioned square feet)

Projects may substitute product-specific data for the default GWP value if the specified product has a lower reported GWP than the default value. Product-specific shall be substituted in Column G of the calculation Table 408.1.1. Substitution of default GWP values is only allowed when type III product-specific EPDs are sourced and noted in Column G. Projects shall use GWP values that include A1-A3 lifecycle stages, as documented in product-specific EPDs, with the exception of SPF and XPS products. For these products, the A5 and B1 values shall be included in the documented GWP value to account for the on-site and off gassing impact of blowing agents. Projects shall provide the EPDs declaration number in Column G.

TABLE R408.1.2

DEFAULT INSULATION GLOBAL WARMING POTENTIAL VALUES

a https://www.buildersforclimateaction.org/beam-estimator.html

b EPD Declaration Number NEPD-2012-889-EN

c EPD Declaration Number 4788647002.102.1

d EPD Declaration Number EPD-KSI-20190072-IBC1-EN

CHAPTER 5 EXISTING BUILDINGS

Section R 501 General.

delete R501.2 Existing buildings.

add R501.2 General

Except as specified in this chapter, this code shall not be used to require the removal, alteration or abandonment of, nor prevent the continued use and maintenance of, an existing building or building system lawfully in existence at the time of adoption of this code. Unaltered portions of the existing building or building supply system shall not be required to comply with this code.

delete and replace R501.4 Compliance.

Additions, alterations, or changes of occupancy to, or relocation of, an existing building, building system or portion thereof shall comply with Section R502, R503, R504 or R505, respectively, in this code. Changes where unconditioned space is changed to conditioned space shall comply with Section R502.

Section R 502 Additions.

delete and replace R502.1.1.1 Building envelope.

New building envelope assemblies that are part of the addition shall comply with Sections R402.1, R402.2, R402.3.1 through R402.3.5, and R402.4. Air leakage testing in accordance with Section R402.4.1.2 is not required for additions complying with this code based on the attributes of the addition alone. Where the existing building and the addition comply with this code as a single building, or where the building with the addition does not use more energy than the existing building, testing must be performed in accordance with Section R402.4.1.2 and an air leakage rate not exceeding three (3) air changes per hour at 50 Pascals (or 0.23 CFM50/Sq. Ft. building shell area, six sided) must be verified.

Exception: Where unconditioned space is changed to conditioned space, the building envelope of the addition shall comply where the UA, as determined in Section R402.1.5, of the existing building and the addition, and any alterations that are part of the project, is less than or equal to UA generated for the existing building.

Section R 503 Alterations.

delete and replace R503.1 General.

Alterations to any building or structure shall comply with the requirements of the code for new construction, without requiring the unaltered portions of the existing building or building system to comply with this code. Alterations shall be such that the existing building or structure is no less conforming to the provisions of this code than the existing building or structure was prior to the alteration.

add R406.4 ERI/HERS-Based Compliance for Base Code and Stretch Code.

Compliance based on an ERI analysis requires that the rated design be shown to have an ERI/HERS Index less than or equal to 54 for Base Code and less than or equal to 47 for Stretch Code when compared to the ERI reference design. Up to 5 ERI points can be earned with renewables. This includes all residential structures, including log homes. The ERI to be used to verify compliance is REM v16.3.3 or later or Ekotrope version 4.0 or later that is accredited by RESNET at https://www.resnet.us/providers/accredited-providers/hers-software-tools/. If the HERS Index scale is revised, the Department of Public Service may update these Index points.

Alterations shall not create an unsafe or hazardous condition or overload existing building systems. Alterations shall be such that the existing building or structure uses no more energy than the existing building or structure prior to the alteration. Alterations to existing buildings shall comply with Sections R503.1.1 through R503.1.4.

delete and replace R503.1.4 Lighting.

New lighting systems that are part of the alteration shall comply with Section R404.1.

Exception: Alterations that replace less than 10 percent of the luminaires in a space, provided that such alterations do not increase the installed interior lighting power.

Section R 505 Change Of Occupancy Or Use.

delete and replace R505.2 General.

Any space that is converted to a dwelling unit or portion thereof from another use shall comply with this code.

Exception: Where the simulated performance option in Section R405 is used to comply with this section, the annual energy cost of the proposed design is permitted to be 110 percent of the annual energy cost otherwise allowed by Section R405.

CHAPTER 6.

REFERENCED STANDARDS

delete and replace the following referenced standards in Chapter 6 as follows:

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History

• EFFECTIVE DATE:
• January 1, 2005 Secretary of State Rule Log #04-20
• AMENDED:
• October 1, 2011 Secretary of State Rule Log #11-032; March 1, 2015 Secretary of State Rule Log #14-046; September 1, 2020 Secretary of State Rule Log #19-072; July 1, 2024 Secretary of State Rule Log #23-018
• These rules are adopted under 30 V.S.A. §51. This document shall be known and cited as the 2020 Vermont Residential Building Energy Standard Amendments. The 2015 Vermont Residential Building Energy Standards (First Printing: March 2015) published by International Code Council (ICC), Inc., as amended herein, are incorporated by reference and are available on the ICC website at: http://www.iccsafe.org.
• STATUTORY AUTHORITY: 30 V.S.A. §51

Chapter 005 EMERGENCY PETROLEUM SETASIDE

31-005 Code Vt. R. 31-000-005-X EMERGENCY PETROLEUM SETASIDE

Preamble

Adequate supplies of fuel are essential to the health, welfare and safety of the people of Vermont; any severe disruption in fuel supplied for use within the state would cause grave hardship and pose a threat to the health and economic wellbeing [well-being] of the people of the state; such interruptions should be responded to by reliance to the greatest extent practicable on the free market system; and that temporary and concurrent state authority for a fuel setaside program should be in place as the federal government terminates, suspends or fails to implement all or part of the federal program.

In response to the needs enumerated above, the 1981 adjourned session of the Vermont General Assembly passed Public Act 162 which was signed into law by Governor Richard A. Snelling on April 15, 1982.

Section 1.1 Purpose

The Vermont Emergency Petroleum Set-Aside Act requires the VSEO to establish and maintain a standby petroleum set-aside program for use during an energy emergency; specifying the maximum set-aside percentage level for each type of fuel; specifying the activities for which set-aside fuel can be made available; authorizing the VSEO to collect certain information from prime suppliers during an energy emergency; requiring suppliers to provide set-aside product to applicants as authorized by the VSEO; providing for procedures for appealing actions of the VSEO related to the set-aside program during an energy emergency; authorizing the VSEO to require prime suppliers to release set-aside product into an area which has been designated by the Governor as suffering from an intrastate supply imbalance; requiring any state set-aside program to be consistent with a federal set-aside program if one is in effect; providing for certain penalties; providing that these regulations terminate on July 1, 1984; and relating generally to the establishment of a standby emergency petroleum set-aside.

Section 1.2 Definitions

Definitions as used in these regulations:

"Assignment" means a written authorization by the VSEO ordering that a specified purchaser be supplied state set-aside product by a specified prime supplier.

"Agricultural Production" means activities for the commercial production of food, including farming, dairying, and fishing, and related support services.

"Base Period" The base period will cover the most recent 12 month period prior to the month in which the set-aside is activated, e.g., if the state set-aside were activated in May of 1982 the base period would be for the period May 1981 through April 1982.

"Consumer" means any individual, trustee, agency, partnership, association, corporation, company, municipality, political subdivision or other legal entity which purchases liquid fossil fuels for ultimate consumption within Vermont.

"Cross Branding/Commingling" means petroleum products with one brand label/logo delivered into tanks at locations displaying another brand label/logo by prime suppliers and wholesale purchaser resellers who are ordered to do so by the Director of the VSEO.

"Director" means the director of the Vermont State Energy Office.

"Distributor" means any individual, trustee, agency, partnership, association, corporation, company, municipality, political subdivision or other legal entity which purchases or markets liquid fossil fuels from a prime supplier or any other source and resells those fuels to consumers within Vermont.

"Emergency Care Facilities" means public or private buildings used to lodge and care for individuals whose place of lodging are rendered uninhabitable due to an energy supply disruption.

"Emergency Services" means but is not limited to law enforcement, fire fighting, emergency road services, emergency medical services.

" End-User" means any firm which is an ultimate consumer of an allocated product other than a Wholesale Purchaser-Consumer.

"Energy Production" means but is not limited to the processing, production, and distribution of energy resources including solar energy, fuel produced from any organic material (including wood, wastes, petroleum, coal, and natural gas), geothermal, nuclear energy and electrical energy.

"Hardship" means a situation involving or potentially involving substantial discomfort or danger and or economic dislocation caused by a shortage of a petroleum product.

"Health Care Facility" means usage by public or private social services agencies which operate programs for the provision of essential health and welfare service.

"Liquid Fossil Fuel" means heating oils, light and heavy diesel oil, motor gasoline, propane, butane, residual fuel oils, kerosene and aviation fuels.

"Passenger Transportation Services" means publicly and privately owned air, marine and surface operations for transporting the general public; bus transportation of pupils to and from schools; vanpooling; and including facilities necessary to support such operations.

"Petroleum Products" means butane, propane (LPG), Gasoline (leaded, unleaded, premium and aviation), Kerosene (No. 1K, No. 2K, range oil and store oil), No. 2 Heating Oil (home heating oil), Diesel Fuel (No. 1D and No. 2D), Jet fuel (kerosene base), No. 4 Fuel Oil (including 4D) and Residual Fuel Oil (No. 5 and No. 5 fuel oil), as defined by ASTM.

"Petroleum Set-aside" means the amount of liquid fossil fuel which is made available from the total supply of a prime supplier for utilization by the State Energy Office pursuant to this chapter to resolve hardships and emergencies due to energy shortages.

"Prime Supplier" means any individual, trustee, agency, partnership, association, corporation, company, municipality, political subdivision or other legal entity which makes the first sale of any liquid fossil fuel into the state distribution system for consumption within the state.

"Public Utility" an enterprise engaged in the production, transmission or distribution of electricity or pipeline gas, (natural or propane) which is regulated by Vermont law.

"Purchaser" means a wholesale purchaser, and end user or both.

"Residential Use" means direct use in residential dwellings or churches or other place of worship for space heating, refrigeration, cooking, water heating and other residential uses.

"Shortfall" means the difference between supply and demand for a covered product.

"State Set-aside" means with respect to a particular state set-aside product, a particular time period, and a particular prime supplier, the state set-aside percentage level for that product applied to that prime supplier's total supply available for that time period which will be sold into the state distribution system for consumption within the state. (See also, Petroleum Set-aside.)

"Supplier" (See prime supplier).

"Supply Obligation" means a prime supplier's obligation to supply all wholesale purchaser-resellers and all wholesale purchaser consumers which purchased or obtained petroleum products from that supplier during the base period as defined above.

"Telecommunication Services" means the emergency or essential installation, repair, operation, and maintenance of voice, telegraph, video, and similar communication services to the public.

"VSEO" means the Vermont State Energy Office.

"Wholesale Purchaser-Consumer" means any firm that is an ultimate consumer which, as part of its normal business practices, purchases or obtains an allocated product from a prime supplier or wholesale purchaser-reseller and receives delivery of the product into a storage tank substantially under the control of that firm at a fixed location.

"Wholesale Purchaser-Reseller" means any firm which purchases, receives through transfer or otherwise obtains (as by consignment) an allocated product and resells or otherwise transfers it to other purchasers without substantially changing its form.

Section 1.3 Petroleum Data Collection to Operate an Emergency Petroleum Set-Aside Program

A. Upon a determination by the Governor that a Petroleum Set-Aside Program is required, the Director of the VSEO will implement the following information collection procedures:

1. The Director shall determine what petroleum data is required to operate a set-aside to meet the current emergency and hardship needs of Vermont's citizens and businesses and shall take action to acquire such information. If the Director determines that the necessary energy information to operate the State Set-Aside Program is unavailable from the Federal Government or any other known source, then such Energy Information will be collected by the VSEO.

a. The Director may require the reporting of the necessary energy information from any prime supplier. (See definitions.)

b. The Director may require the reporting of energy information by order, questionnaire or such means as is deemed appropriate.

c. Whenever reports from prime suppliers are requested under this subpart, order, questionnaire or other means shall reference that such reports are being requested under the authority of V.S.A. Title 9, Chapter 112. The information to be reported to the VSEO by every prime supplier on or before the 20th of each month during the period the Emergency Petroleum Set-Aside is in operation shall include, but not be limited to the following:

1. Total actual deliveries into the state during the preceding month by set-aside product;

2. The total supply available for distribution into the state for consumption in the state during the upcoming month.

3. The state set-aside volume for distribution in the state during the coming month by set-aside product.

d. The Director shall notify prime suppliers of each type of covered set-aside product and the monthly petroleum set-aside percentage (not exceeding three percent) for such products on or before the 1st of the month prior to month in which the product is to be made available.

Section 1.4 Procedures for Applying for a State Set-Aside Assignment

Purpose: The following procedures establish how to apply for an assignment under the state set-aside system.

Who May Apply

A prime supplier, a wholesale purchaser-reseller or a wholesale purchaser-consumer may apply for an assignment from the state set-aside system to meet a hardship or emergency requirement, or a wholesale purchaser-reseller may apply for an assignment to enable him to supply wholesale purchaser-consumers and end users. A prime supplier shall continue all supply obligation's during the period a petroleum set-aside is in effect.

What to File

a) Application for assignment from the state set-aside system shall be made on form VSEO-1. Written requests not on Form VSEO-1 or, where time is of the essence, verbal requests including those made by telephone will be accepted but the applicant shall file a VSEO-1 within 10 days of the original application date.

Where to File

Applications for all types of assignments from the state set-aside shall be made to the Vermont State Energy Office, State Office Building, Montpelier, Vermont 05602. Area Code 802-828-2393.

Contents

a) Set-aside

1. The VSEO requires that an applicant provide sufficient information in an application for an assignment from the state set-aside system, whether such application is in writing or by verbal request, to enable the state office to determine whether a hardship or an emergency need exists.

With respect to verbal applications, the VSEO will establish internal procedures for the recording and verification of any information provided by an applicant. At a minimum, the information received by the VSEO is that required on form VSEO 1. Such information shall include, but not be limited to:

(i) The applicants hardship or emergency needs.

(ii) A statement that the applicant's base period supplier or new supplier is unable to supply his requirements or, if the applicant does not have a local supplier, a statement that he has contacted two suppliers that could supply the allocated product and the identification of those suppliers.

2. Where the application is on behalf of an end-user it shall contain a description of the end-users that will be supplied and their hardship and emergency requirements.

VSEO Evaluation

A. Consideration of Application

1. Applications for assignment from the state set-aside shall be processed according to the following:

a. The VSEO will develop internal office procedures for processing applications.

b. The VSEO may investigate any factual allegation in an application and take it into consideration in granting or denying an application for state set-aside.

c. If the Director determines that there is insufficient information upon which to base a decision and if upon request the necessary additional information is not submitted, the Director may dismiss the application without prejudice. If the failure to supply additional information is repeated or willful, the Director may dismiss the application with prejudice.

Decision and Order

1. Upon consideration of the set-aside application, whether written or verbal, and other relevant information received or obtained during the proceeding, the Director or his/her designated representative shall issue an order denying or granting the application. (9 V.S.A. Chapter 112 4133 Subsection (b-4).)

2. The order shall include a brief written statement of the basis upon which the order was issued.

3. The order shall state that it is effective upon issuance and shall expire within ten days of its issuance to the prime supplier or the designated local representative of such prime supplier.

4. An assignment is effective upon issuance, and represents an encumbrance on the prime supplier's set-aside volumes for the month of issuance of the order regardless of the actual date of pick up and delivery of the product to the applicant.

Even if an order is appealed a prime supplier shall honor assignments on presentation, and shall not delay delivery while appealing such order to the VSEO.

The Director may direct that a wholesale purchaser-seller be supplied from the state set-aside in order that the wholesale purchaser-reseller can supply specified individual consumers who would not otherwise be eligible for an assignment. If the state set-aside volumes are not sufficient to satisfy all requests for assignments the VSEO may determine priorities for making assignments among the activities for which the request is made.

The Director shall require each prime supplier to designate a Primary representative and an alternate representative with full authority to act on behalf of the prime supplier with respect to state set-aside applications and assignments. The VSEO shall to the maximum extent feasible consult with a prime supplier's representative prior to issuing any authorizing document affecting the amount of state set-aside product to be provided by the prime supplier.

The state set-aside volumes for a particular month cannot be accumulated or deferred. The State set-aside shall be made available from stocks of prime suppliers, whether directly or through their normal distribution system prior to the end of the month for which the product is made available to the state set-aside.

Timeliness (Processing applications)

(a) If the VSEO fails to take action on an application, whether verbal or written, within ten days of filing (if the application is verbal, it shall be considered to be filed on the date that it is verbally communicated to the VSEO) the applicant may treat the application as having been denied in all respects.

(b) In certain instances the VSEO may temporarily suspend the running of the tenday [ten day] period if it finds that additional information is necessary. The VSEO may suspend action until it notifies the applicant that the additional information is necessary or that an application has otherwise been improperly filed.

Section 1.5 Exceptions and Appeals

(a) Any person aggrieved by a decision issued pursuant to the state set-aside program may appeal to the Director of the VSEO.

(b) Any person aggrieved by the denial of an assignment from the state set-aside may appeal to the Director for reconsideration of their applications.

Section 1.6 Confidentiality of Energy Information

(a) Energy information obtained by the VSEO shall be an exempt record and confidential pursuant to subdivision (1) of subsection (b) of section 317 of Title I V.S.A.

History

• EFFECTIVE DATE: March 26, 1983 Secretary of State Rule Log #83-21
• AMENDED: December 2017 [Renumbered from 30 000 040]
• STATUTORY AUTHORITY: Statutory authority not provided.

Chapter 006 HOME ENERGY AUDIT TEAM (HEAT) FEE SCHEDULE

31-006 Code Vt. R. 31-000-006-X HOME ENERGY AUDIT TEAM (HEAT) FEE SCHEDULE

Section 1.0 Preamble

The Vermont Public Service Department, through a contract with the University of Vermont Extension Service, provides residential audit services to Vermonters statewide on a first come first served basis. In the past, there has been no charge for such services. The cost of providing these services continues to rise at a point in time when federal funds supporting this program have been reduced. In recognition of this fact, legislation was passed during the Adjourned Session of the 1981 General Assembly instructing the Commissioner of the Vermont Public Service Department to establish a fee schedule for Home Energy Audits (HEAT).

Section 2.0 Definitions

"Commissioner" - Commissioner of the Vermont Public Service Department.

"Department" - The Vermont Public Service Department (PSD).

"Fees" - Monetary payment made to the Vermont Public Service Department (PSD) by Vermont householders to partially offset the costs of audit services provided them by the PSD or its agent.

"HEAT" - Home Energy Audit Teams, the name given to the PSD program to provide residence audit services to Vermont's householders.

"Home Energy Audits (HEAT)" - audits of Vermont residences provided by the PSD or its agent.

Section 3.0 Purpose

To establish a fee schedule for Home Energy Audits (HEAT) as mandated in 3 V.S.A. Section 2286(e).

Section 3.1 Heat Audit Fee Schedule

A. The PSD shall charge a $ 15 fee to each eligible Vermont householder receiving a HEAT audit.

B. The $ 15 fee will take into consideration the ability of the recipient to pay. This will be determined by existing applicable federal low income guidelines.

Section 3.2 Payment of Fees

A. Payment of fees shall be made to the HEAT Program in a manner to be developed by the PSD.

B. Fees shall be charged for an audit performed on or after the first of the month following the effective date of these rules.

C. Persons asking to be exempted from the payment of fees shall self-certify on a form provided by the PSD.

D. Exceptions and appeals to the payment of audit fees - Any person aggrieved by the payment of the fee may appeal to the Commissioner of the Vermont Public Service Department.

History

• EFFECTIVE DATE:
• August 2, 1984 Secretary of State Rule Log #84-32
• AMENDED:
• December 2017 [Renumbered from 30 000 041]
• STATUTORY AUTHORITY: 3 V.S.A. C. 45 § 2286

Chapter 007 REPORTING OF ENERGY INFORMATION

31-007 Code Vt. R. 31-000-007-X REPORTING OF ENERGY INFORMATION

Section 2.1 Scope

The Director has determined that:

(1) Certain petroleum inventories, storage capacities or product receipts information are necessary to assist in the formulation of policy or to carry out the purpose of the Energy Emergency Petroleum Set-aside Act or the emergency powers of the Governor.

(2) As such energy information is not available from the Department of Energy or any other source known to the Vermont State Energy Office, then such energy information shall be collected by this office.

(a) The Director requires such reports from any prime supplier by methods to be developed by the VSEO. The Director may change the reporting requirements from time to time.

Section 2.2 Definitions

As used in this part:

(1) "DIRECTOR" means the Director of the Vermont State Energy Office.

(2) PETROLEUM PRODUCTS" means propane (LPG), gasoline (leaded, unleaded, premium and aviation), kerosene (No. 1K & 2K, range oil and stove oil), No. 2 heating oil (home heating oil), diesel fuel (No. 1D and No. 2D), jet fuel (kerosene base), No. 4 fuel oil (including No. 4D), and residual fuel oil (No. 5 and No. 6 fuel oil), as defined by ASTM.

(3) "VSEO" means Vermont State Energy Office.

(4) "PRIMARY STORAGE FACILITY" means any storage facility or terminal that can store at least 50,000 gallons or more which receives petroleum products by ship (tanker), barge, pipeline, truck (transport), or railroad tank car (tank train) for holding within the state.

(5) "PRIME SUPPLIER" means any supplier or entity that owns, leases, maintains or operates a primary storage facility of petroleum products as defined in this section.

(6) "DOE" means Department of Energy at the federal level, or its designated representative.

Section 2.3 General Description of the Report

The "Prime Supplier Report" shall provide for reporting of storage capacities, inventory levels, purchases and sales of the following petroleum products: propane, gasoline (regular leaded, premium leaded, regular unleaded, super unleaded and aviation), kerosene, No. 2 heating oil, No. 2 diesel fuel, jet fuel, No. 5 fuel oil and residual oils. This report shall be supplied to prime suppliers by the VSEO.

Section 2.4 Who Must Submit

The "Prime Supplier Report" shall be completed by every prime supplier and shall include information on products held in its custody, regardless of ownership of the petroleum product for each primary storage facility it operates within the State of Vermont.

Section 2.5 When to Submit

The "Prime Supplier Report" shall be filed with the Vermont State Energy Office monthly by the 20th calendar day following the report period, e.g., the reporting covering January 1983 shall be mailed (postmarked) by February 20, 1983.

All Prime Suppliers shall file reports commencing 30 days after the effective date of these rules.

Section 2.6 Where to Submit

Mail completed form to:

Vermont State Energy Office

Fuel Management Division

State Office Building

Montpelier, VT 05602

Section 2.7 Exceptions, Exemptions and Interpretations and Rulings

Any application for exceptions, exemptions or request for interpretations relating to this subpart shall be filed in writing to the Director.

Section 2.8 Confidentiality

(a) Energy information obtained by the VSEO shall be an exempt record and confidential pursuant to Title 9, Chapter 110, Section 4113(b).

History

• EFFECTIVE DATE:
• March 6, 1983 Secretary of State Rule Log #83-22
• AMENDED:
• December 2017 [Renumbered from 30 000 040]
• STATUTORY AUTHORITY: Statutory authority not provided.

Chapter 008 VERMONT APPLIANCE EFFICIENCY AND WATER CONSERVATION STANDARDS

31-008 Code Vt. R. 31-000-008-X VERMONT APPLIANCE EFFICIENCY AND WATER CONSERVATION STANDARDS

Introduction to Rule Text.

The following text of the Department of Public Service rule implementing the Vermont Appliance Efficiency and Water Conservation Standards is comprised of two complete sections of the United States Code of Federal Regulations: 10 C.F.R. Part 430 and 10 C.F.R. Part 431.

Act 42 of 2017, which directed the Commissioner of the Department of Public Service to promulgate this rule, requires that the rule include the minimum efficiency and water conservation standards for each product that is subject to a standard on 10 CFR §§ 430 and 431 as those provisions existed on January 19, 2017, and further requires that minimum standard and testing protocol for each product be the same as those adopted in those sections of the Code of Federal Regulations.

Preamble.

The Vermont Appliance Efficiency and Water Conservations Standards are designed to ensure that the federal appliance and lighting efficiency standards in effect on January 19, 2017 will be in place in Vermont should the federal standards be repealed or voided. Implementation of these standards pursuant to Act 42 shall occur when any existing federal standard included in this rule is withdrawn, repealed or otherwise voided, or where a waiver of federal preemption is issued pursuant to 42 U.S.C. § 6306(b). When a standard that is included in this rule becomes enforceable, a person shall not sell or offer for sale in the State a new product subject to the standard unless the efficiency or water conservation of the new product meets or exceeds the requirements set forth in the standard.

The below listed definitions and minimum efficacy standard for General Service Lamps shall be in effect commencing on 1/1/2020.

General Service Lamp - Definitions

A general service lamp is a lamp that has an ANSI base; is able to operate at a voltage of 12 volts or 24 volts, at or between 100 to 130 volts, at or between 220 to 240 volts, or of 277 volts for integrated lamps (as defined in this section), or is able to operate at any voltage for non- integrated lamps (as defined in this section); has an initial lumen output of greater than or equal to 310 lumens (or 232 lumens for modified spectrum general service incandescent lamps) and less than or equal to 3,300 lumens; is not a light fixture; is not an LED down light retrofit kit; and is used in general lighting applications. General service lamps include, but are not limited to, general service incandescent lamps, incandescent reflector lamps, compact fluorescent lamps, general service light emitting diode lamps, and general service organic light emitting diode lamps. GSLs include GSILs. ( 42 U.S.C. 6291(30)(BB)(i)(I) )

The current definition of ''general service incandescent lamp'' is a standard incandescent or halogen type lamp that is intended for general service applications; has a medium screw base; has a lumen range of not less than 310 lumens and not more than 2,600 lumens or, in the case of a modified spectrum lamp, not less than 232 lumens and not more than 1,950 lumens; and is capable of being operated at a voltage range at least partially within 110 and 130 volts.

General service lamps do not include:

-- Appliance lamps;

-- Black light lamps;

-- Bug lamps;

-- Colored lamps;

-- G shape lamps with a diameter of 5 inches or more as defined in ANSI C79.1-2002;

-- General service fluorescent lamps;

-- High intensity discharge lamps;

-- Incandescent reflector lamps

-- Infrared lamps;

-- J, JC, JCD, JCS, JCV, JCX, JD, JS, and JT shape lamps that do not have Edison screw bases;

-- Lamps that have a wedge base or prefocus base;

-- Left-hand thread lamps;

-- Marine lamps;

-- Marine signal service lamps;

-- Mine service lamps;

-- MR shape lamps that have a first number symbol equal to 16 (diameter equal to 2 inches) as defined in ANSI C79.1-2002, operate at 12 volts, and have a lumen output greater than or equal to 800;

-- Other fluorescent lamps;

-- Plant light lamps;

-- R20 short lamps;

-- Reflector lamps (as defined in this section) that have a first number symbol less than 16 (diameter less than 2 inches) as defined in ANSI C79.1-2002 and that do not have E26/E24, E26d, E26/50x39, E26/53x39, E29/28, E29/ 53x39, E39, E39d, EP39, or EX39 bases;

-- S shape or G shape lamps that have a first number symbol less than or equal to 12.5 (diameter less than or equal to 1.5625 inches) as defined in ANSI C79.1-2002;

-- Sign service lamps;

-- Silver bowl lamps;

-- Showcase lamps;

-- Specialty MR lamps;

-- T shape lamps that have a first number symbol less than or equal to 8 (diameter less than or equal to 1 inch) as defined in ANSI C79.1-2002, nominal overall length less than 12 inches, and that are not compact fluorescent lamps (as defined in this section);

-- Traffic signal lamps.

Appliance lamp means any lamp that--

(1) Is specifically designed to operate in a household appliance and has a maximum wattage of 40 watts (including an oven lamp, refrigerator lamp, and vacuum cleaner lamp); and

(2) When sold at retail, is designated and marketed for the intended application, with

(i) The designation on the lamp packaging; and

(ii) Marketing materials that identify the lamp as being for appliance use.

Black light lamp means a lamp that is designed and marketed as a black light lamp and is an ultraviolet lamp with the highest radiant power peaks in the UV-A band (315 to 400 nm) of the electromagnetic spectrum.

Bug lamp means a lamp that is designed and marketed as a bug lamp, has radiant power peaks above 550 nm on the electromagnetic spectrum, and has a visible yellow coating.

Colored lamp means a colored fluorescent lamp, a colored incandescent lamp, or a lamp designed and marketed as a colored lamp with either of the following characteristics (if multiple modes of operation are possible [such as variable CCT], either of the below characteristics must be maintained throughout all modes of operation):

(1) A CRI less than 40, as determined according to the method set forth in CIE Publication 13.3 (incorporated by reference; see § 430.3); or

(2) A CCT less than 2,500 K or greater than 7,000 K.

Colored fluorescent lamp means a fluorescent lamp designated and marketed as a colored lamp and not designed or marketed for general illumination applications with either of the following characteristics:

(1) A color rendering index (CRI) less than 40, as determined according to the method set forth in CIE Publication 13.3 (incorporated by reference; see § 430.3); or

(2) A correlated color temperature less than 2,500K or greater than 7,000K as determined according to the method set forth in IES LM-9 (incorporated by reference; see § 430.3).

Colored incandescent lamp means an incandescent lamp designated and marketed as a colored lamp that has--

(1) A CRI of less than 50, as determined according to the test method given in CIE 13.3 (incorporated by reference; see § 430.3); or

(2) A correlated color temperature of less than 2,500K, or greater than 4,600K, where correlated temperature is computed according to the "Computation of Correlated Color Temperature and Distribution Temperature," Journal of the Optical Society of America, (incorporated by reference; see § 430.3).

Compact fluorescent lamp (CFL) means an integrated or non-integrated single-base, low- pressure mercury, electric-discharge source in which a fluorescing coating transforms some of the ultraviolet energy generated by the mercury discharge into light; the term does not include circline or U-shaped lamps.

General service fluorescent lamp means any fluorescent lamp which can be used to satisfy the majority of fluorescent lighting applications, but does not include any lamp designed and marketed for the following non-general application:

(1) Fluorescent lamps designed to promote plant growth;

(2) Fluorescent lamps specifically designed for cold temperature applications;

(3) Colored fluorescent lamps;

(4) Impact-resistant fluorescent lamps;

(5) Reflectorized or aperture lamps;

(6) Fluorescent lamps designed for use in reprographic equipment; and

(7) Lamps primarily designed to produce radiation in the ultra-violet region of the spectrum.

General service light-emitting diode (LED) lamp means an integrated or nonintegrated LED lamp designed for use in general lighting applications (as defined in this section) and that uses light emitting diodes as the primary source of light.

General service organic light-emitting diode (OLED) lamp means an integrated or non- integrated OLED lamp designed for use in general lighting applications (as defined in this section) and that uses organic light-emitting diodes as the primary source of light.

Incandescent reflector lamp (commonly referred to as a reflector lamp) means any lamp in which light is produced by a filament heated to incandescence by an electric current, which: contains an inner reflective coating on the outer bulb to direct the light; is not colored; is not designed for rough or vibration service applications; is not an R20 short lamp; has an R, PAR, ER, BR, BPAR, or similar bulb shapes with an E26 medium screw base; has a rated voltage or voltage range that lies at least partially in the range of 115 and 130 volts; has a diameter that exceeds 2.25 inches; and has a rated wattage that is 40 watts or higher.

Infrared lamp means a lamp that is designed and marketed as an infrared lamp; has its highest radiant power peaks in the infrared region of the electromagnetic spectrum (770 nm to 1 mm); has a rated wattage of 125 watts or greater; and which has a primary purpose of providing heat.

Integrated lamp means a lamp that contains all components necessary for the starting and stable operation of the lamp, does not include any replaceable or interchangeable parts, and is connected directly to a branch circuit through an ANSI base and corresponding ANSI standard lamp holder (socket).

LED Downlight Retrofit Kit means a product designed and marketed to install into an existing downlight, replacing the existing light source and related electrical components, typically employing an ANSI standard lamp base, either integrated or connected to the downlight retrofit by wire leads, and is a retrofit kit. LED downlight retrofit kit does not include integrated lamps or non-integrated lamps.

Left-hand thread lamp means a lamp with direction of threads on the lamp base oriented in the left-hand direction.

Light fixture means a complete lighting unit consisting of light source(s) and ballast(s) or driver(s) (when applicable) together with the parts designed to distribute the light, to position and protect the light source, and to connect the light source(s) to the power supply.

Marine lamp means a lamp that is designed and marketed for use on boats and can operate at or between 12 volts and 13.5 volts.

Marine signal service lamp means a lamp that is designed and marketed for marine signal service applications.

Medium screw base means an Edison screw base identified with the prefix E-26 in the "American National Standard for Electric Lamp Bases", ANSI_IEC C81.61-2003, published by the American National Standards Institute. Appliance lamp means any lamp that--

(1) Is specifically designed to operate in a household appliance and has a maximum wattage of 40 watts (including an oven lamp, refrigerator lamp, and vacuum cleaner lamp); and

(2) When sold at retail, is designated and marketed for the intended application, with

(i) The designation on the lamp packaging; and

(ii) Marketing materials that identify the lamp as being for appliance use.

Mine service lamp means a lamp that is designed and marketed for mine service applications.

Modified spectrum means, with respect to an incandescent lamp, an incandescent lamp that--

(1) Is not a colored incandescent lamp; and

(2) When operated at the rated voltage and wattage of the incandescent lamp--

(A) Has a color point with (x, y) chromaticity coordinates on the C.I.E. 1931 chromaticity diagram, figure 2, page 3 of IESNA LM-16 (incorporated by reference; see § 430.3) that lies below the black-body locus; and

(B) Has a color point with (x, y) chromaticity coordinates on the C.I.E. 1931 chromaticity diagram, figure 2, page 3 of IESNA LM-16 (incorporated by reference; see § 430.3) that lies at least 4 MacAdam steps, as referenced in IESNA LM-16, distant from the color point of a clear lamp with the same filament and bulb shape, operated at the same rated voltage and wattage.

Non-integrated lamp means a lamp that is not an integrated lamp.

Organic light-emitting diode or OLED means a thin-film light-emitting device that typically consists of a series of organic layers between 2 electrical contacts (electrodes).

Other fluorescent lamp means low pressure mercury electric-discharge sources in which a fluorescing coating transforms some of the ultraviolet energy generated by the mercury discharge into light and include circline lamps and include double-ended lamps with the following characteristics: Lengths from one to eight feet; designed for cold temperature applications; designed for use in reprographic equipment; designed to produce radiation in the ultra-violet region of the spectrum; impact-resistant; reflectorized or aperture; or a CRI of 87 or greater.

Pin base lamp means a lamp that uses a base type designated as a single pin base or multiple pin base system.

Plant light lamp means a lamp that is designed to promote plant growth by emitting its highest radiant power peaks in the regions of the electromagnetic spectrum that promote photosynthesis: Blue (440 nm to 490 nm) and/or red (620 to 740 nm), and is designed and marketed for plant growing applications.

R20 incandescent reflector lamp means a reflector lamp that has a face diameter of approximately 2.5 inches, as shown in figure 1(R) on page 7 of ANSI C79.1-1994 (incorporated by reference; see § 430.3 ).

R20 short lamp means a lamp that is an R20 incandescent reflector lamp that has a rated wattage of 100 watts; has a maximum overall length of 3 and 5/8, or 3.625, inches; and is designed, labeled, and marketed specifically for pool and spa applications.

Rated voltage with respect to incandescent lamps means:

(1) The design voltage if the design voltage is 115 V, 130 V or between 115V and 130 V:

(2) 115 V if the design voltage is less than 115 V and greater than or equal to 100 V and the lamp can operate at 115 V; and

(3) 130 V if the design voltage is greater than 130 V and less than or equal to 150 V and the lamp can operate at 130 V.

Reflector lamp means a lamp that has an R, PAR, BPAR, BR, ER, MR, or similar bulb shape as defined in ANSI C78.20-2003 (incorporated by reference; see § 430.3) and ANSI C79.1-2002 (incorporated by reference; see § 430.3) and is used to provide directional light.

Showcase lamp means a lamp that has a T shape as specified in ANSI C78.20-2003 (incorporated by reference; see § 430.3) and ANSI C79.1-2002 (incorporated by reference; see § 430.3), is designed and marketed as a showcase lamp, and has a maximum rated wattage of 75 watts.

Sign service lamp means a vacuum type or gas-filled lamp that has sufficiently low bulb temperature to permit exposed outdoor use on high speed flashing circuits, is designed and marketed as a sign service lamp, and has a maximum rated wattage of 15 watts.

Silver bowl lamp means a lamp that has an opaque reflective coating applied directly to part of the bulb surface that reflects light toward the lamp base and that is designed and marketed as a silver bowl lamp.

Specialty MR lamp means a lamp that has an MR shape as defined in ANSI C79.1-2002 (incorporated by reference; see § 430.3), a diameter of less than or equal to 2.25 inches, a lifetime of less than or equal to 300 hours, and that is designed and marketed for a specialty application.

Traffic signal lamp means a lamp that is designed and marketed for traffic signal applications and has a lifetime of 8,000 hours or greater.

Minimum Efficacy Standards for General Service Lamps

The minimum efficacy standard for general service lamps shall be 45 lumens per watt when tested in accordance with 10 C.F. R. § 430.23(gg) as that provision appears in this rule.

Part 430 Energy Conservation Program for Consumer Products. [Incorporated by Reference]

SUBPART A -- GENERAL PROVISIONS

§ 430. 1 Purpose and scope.

§ 430. 2 Definitions.

§ 430. 3 Materials incorporated by reference.

§ 430. 4 Sources for information and guidance.

SUBPART B -- TEST PROCEDURES

§ 430. 21 Purpose and scope.

§ 430. 23 Test procedures for the measurement of energy and water consumption.

§ 430. 24 Units to be tested.

§ 430. 25 Laboratory Accreditation Program.

§ 430. 27 Petitions for waiver and applications for interim waiver.

Appendix A to Subpart B of Part 430--Uniform Test Method for Measuring the Energy Consumption of Electric Refrigerators and Electric Refrigerator-Freezers.

Appendix A1 to Subpart B of Part 430 Uniform Test Method for Measuring the Energy Consumption of Electric Refrigerators and Electric Refrigerator-Freezers.

Appendix B to Subpart B of Part 430--Uniform Test Method for Measuring the Energy Consumption of Freezers.

Appendix B1 to Subpart B of Part 430--Uniform Test Method for Measuring the Energy Consumption of Freezers.

Appendix C to Subpart B of Part 430 Uniform Test Method for Measuring the Energy Consumption of Dishwashers.

Appendix D to Subpart B of Part 430-Uniform Test Method for Measuring the Energy Consumption of Clothes Dryers

Appendix E to Subpart B of Part 430-Uniform Test Method for Measuring the Energy

Consumption of Water Heaters

Appendix F to Subpart B of Part 430-Uniform Test Method for Measuring the Energy Consumption of Room Air Conditioners

Appendix G to Subpart B Of Part 430 -- Uniform Test Method For Measuring The Energy Consumption Of Unvented Home Heating Equipment

Appendix H to Subpart B of Part 430--[Reserved]

Appendix I to Subpart B of Part 430-- Uniform Test Method For Measuring The Energy Consumption Of Conventional Ranges, Conventional Cooking Tops, Conventional Ovens, and Microwave Ovens.

Appendix J to Subpart B of Part 430--Uniform Test Method for Measuring the Energy Consumption of Automatic and Semi-automatic Clothes Washers

Appendix J1 to Subpart B of Part 430--Uniform Test Method for Measuring the Energy Consumption of Automatic and Semi-automatic Clothes Washers

Appendixes K-L to Subpart B of Part 430 [Reserved]

Appendix M to Subpart B of Part 430--Uniform Test Method for Measuring the Energy Consumption of Central Air Conditioners

Appendix N to Subpart B of Part 430 -- Uniform Test Method for Measuring the Energy Consumption of Furnaces And Boilers

Appendix O to Subpart B -- Uniform Test Method for Measuring the Energy Consumption of Vented Home Heating Equipment

Appendix P to Subpart B of Part 430--Uniform Test Method for Measuring the Energy Consumption of Pool Heaters

Appendix Q to Subpart B of Part 430--Uniform Test Method for Measuring the Energy Consumption of Fluorescent Lamp Ballasts

Appendix R to Subpart B of Part 430 -- Uniform Test Method for Measuring Average Lamp Efficacy (LE), Color Rendering Index (CRI), and Correlated Color Temperature (CCT) of Electric Lamps

Appendix S to Subpart B of Part 430 -- Uniform Test Method for Measuring the Water

Consumption of Faucets and Showerheads

Appendix T to Subpart B of Part 430 -- Uniform Test Method for Measuring the Water Consumption of Water Closets and Urinals

Appendix U to Subpart B of Part 430 -- Uniform Test Method for Measuring the Energy Consumption of Ceiling Fans

Appendix V to Subpart B of Part 430 -- Uniform Test Method for Measuring the Energy Consumption of Ceiling Fan Light Kits

Appendix W to Subpart B of Part 430--Uniform Test Method for Measuring the Energy Consumption of Medium Base Compact Fluorescent Lamps

Appendix X to Subpart B of Part 430 -- Uniform Test Method for Measuring the Energy Consumption of Dehumidifiers

Appendix Y to Subpart B of Part 430 -- Uniform Test Method for Measuring the Energy Consumption of Battery Chargers

Appendix Z to Subpart B of Part 430 -- Uniform Test Method for Measuring the Energy Consumption of External Power Supplies

SUBPART C -- ENERGY AND WATER CONSERVATION STANDARDS

§ 430. 31 Purpose and scope.

§ 430. 32 Energy and water conservation standards and their effective dates.

§ 430. 33 Preemption of State regulations.

§ 430. 34 Energy and water conservation standards amendments

§ 430. 35 Petitions with respect to general service lamps.

Appendix A to Subpart C of Part 430 -- Procedures, Interpretations and Policies for Consideration of New or Revised Energy Conservation Standards for Consumer Products

SUBPART D -- PETITIONS TO EXEMPT STATE REGULATION FROM PREEMPTION; PETITIONS TO WITHDRAW EXEMPTION OF STATE REGULATION

§ 430. 40 Purpose and scope.

§ 430. 41 Prescriptions of a rule.

§ 430. 42 Filing requirements.

§ 430. 43 Notice of petition.

§ 430. 44 Consolidation.

§ 430. 45 Hearing.

§ 430. 46 Disposition of petitions.

§ 430. 47 Effective dates of final rules.

§ 430. 48 Request for reconsideration.

§ 430. 49 Finality of decision.

SUBPART E -- SMALL BUSINESS EXEMPTIONS

§ 430. 50 Purpose and scope.

§ 430. 51 Eligibility

§ 430. 52 Requirements for applications.

§ 430. 53 Processing of applications.

§ 430. 54 Referral to the Attorney General.

§ 430. 55 Evaluation of application.

§ 430. 56 Decision and order.

§ 430. 57 Duration of temporary exemption.

SUBPART F -- CERTIFICATION AND ENFORCEMENT

§ 430. 60 Purpose and scope.

§ 430. 61 Prohibited acts.

§ 430. 62 Submission of data.

§ 430. 63 Sampling.

§ 430. 64 Imported products.

§ 430. 65 Exported products.

§ 430. 70 Enforcement.

§ 430. 71 Cessation of distribution of a basic model.

§ 430. 72 Subpoena.

§ 430. 73 Remedies.

§ 430. 74 Hearings and Appeals.

§ 430. 75 Confidentiality.

Appendix A To Subpart F of Part 430 -- Compliance Statement and Certification Report.

Appendix B To Subpart F of Part 430 -- Sampling Plan for Enforcement Testing. Part 431 Energy Efficiency Program for Certain Commercial and Industrial Equipment. [Incorporated by Reference]

SUBPART A -- GENERAL PROVISIONS

§ 431. 1 Purpose and scope.

§ 431. 2 Definitions.

SUBPART B -- ELECTRIC MOTORS

§ 431. 11 Purpose and scope.

§ 431. 12 Definitions.

TEST PROCEDURES, MATERIALS INCORPORATED AND METHODS OF DETERMINING EFFICIENCY

§ 431. 15 Materials incorporated by reference.

§ 431. 16 Test procedures for the measurement of energy efficiency.

§ 431. 17 Determination of efficiency.

§ 431. 18 Testing laboratories.

§ 431. 19 Department of Energy recognition of accreditation bodies.

§ 431. 20 Department of Energy recognition of nationally recognized certification programs.

§ 431. 21 Procedures for recognition and withdrawal of recognition of accreditation bodies and certification programs.

ENERGY CONSERVATION STANDARDS

§ 431. 25 Energy conservation standards and effective dates.

§ 431. 26 Preemption of State regulations.

LABELING

§ 431. 31 Labeling requirements.

§ 431. 32 Preemption of State regulations.

CERTIFICATION

§ 431. 35 Applicability of certification requirements.

§ 431. 36 Compliance Certification.

Appendix A to Subpart B of 10 CFR Part 431 [Reserved]

Appendix B to Subpart B of Part 431--Uniform Test Method for Measuring Nominal Full-Load Efficiency of Electric Motors

Appendix C to Subpart B of Part 431 -- Compliance Certification

Appendix C to Subpart B of Part 431 -- Compliance Certification

SUBPART C -- COMMERCIAL REFRIGERATORS, FREEZERS AND REFRIGERATOR-FREEZERS

§ 431. 61 Purpose and scope.

§ 431. 62 Definitions concerning commercial refrigerators, freezers and refrigerator-freezers.

TEST PROCEDURES

§ 431. 63 Materials incorporated by reference.

§ 431. 64 Uniform test method for the measurement of energy consumption of commercial refrigerators, freezers, and refrigerator-freezers.

ENERGY CONSERVATION STANDARDS

§ 431. 66 Energy conservation standards and their effective dates.

SUBPART D -- COMMERCIAL WARM AIR FURNACES

§ 431. 71 Purpose and scope.

§ 431. 72 Definitions concerning commercial warm air furnaces.

TEST PROCEDURES

§ 431. 75 Materials incorporated by reference.

§ 431. 76 Uniform test method for the measurement of energy efficiency of commercial warm air furnaces.

ENERGY CONSERVATION STANDARDS

§ 431. 77 Energy conservation standards and their effective dates.

SUBPART E -- COMMERCIAL PACKAGED BOILERS

§ 431. 81 Purpose and scope.

§ 431. 82 Definitions concerning commercial packaged boilers.

TEST PROCEDURES

§ 431. 85 Materials incorporated by reference.

§ 431. 86 Uniform test method for the measurement of energy efficiency of commercial packaged boilers.

ENERGY EFFICIENCY STANDARDS

§ 431. 87 Energy conservation standards and their effective dates.

SUBPART F --COMMERCIAL AIR CONDITIONERS AND HEAT PUMPS

§ 431. 91 Purpose and scope

§ 431. 92 Definitions concerning commercial air conditioners and heat pumps.

TEST PROCEDURES

TEST PROCEDURES

§ 431. 95 Materials incorporated by reference.

§ 431. 96 Uniform test method for the measurement of energy efficiency of commercial air conditioners and heat pumps.

§ 431. 97 Energy efficiency standards and their compliance dates.

SUBPART G --COMMERCIAL WATER HEATERS, HOT WATER SUPPLY BOILERS AND UNFIRED HOT WATER STORAGE TANKS

§ 431. 101 Purpose and scope.

§ 431. 102 Definitions concerning commercial water heaters, hot water supply boilers, and unfired hot water storage tanks.

§ 431. 104 Sources for information and guidance.

TEST PROCEDURES

§ 431. 105 Materials incorporated by reference.

§ 431. 106 Uniform test method for the measurement of energy efficiency of commercial water heaters and hot water supply boilers (other than commercial heat pump water heaters).

§ 431. 107 Uniform test method for the measurement of energy efficiency of commercial heat pump water heaters [Reserved]

ENERGY CONSERVATION STANDARDS

§ 431. 110 Energy conservation standards and their effective dates.

SUBPART H --AUTOMATIC COMMERCIAL ICE MAKERS

§ 431. 131 Purpose and scope.

§ 431. 132 Definitions concerning automatic commercial ice makers.

TEST PROCEDURES

§ 431. 133 Materials incorporated by reference.

§ 431. 134 Uniform test methods for the measurement of energy and water consumption of automatic commercial ice makers.

ENERGY CONSERVATION STANDARDS

§ 431. 136 Energy conservation standards and their effective dates.

SUBPART I -- COMMERCIAL CLOTHES WASHERS

§ 431. 151 Purpose and scope.

§ 431. 152 Definitions concerning commercial clothes washers. TEST PROCEDURES

§ 431. 154 Test procedures.

ENERGY CONSERVATION STANDARDS

§ 431. 156 Energy and water conservation standards and effective dates.

SUBPART J --[RESERVED]

431.171-431.176 [Reserved]

SUBPART K -- DISTRIBUTION TRANSFORMERS

§ 431. 191 Purpose and scope.

§ 431. 192 Definitions.

TEST PROCEDURES

§ 431. 193 Test procedures for measuring energy consumption of distribution transformers.

ENERGY CONSERVATION STANDARDS

§ 431. 196 Energy conservation standards and their effective dates.

COMPLIANCE AND ENFORCEMENT

Appendix A to Subpart K of Part 431 -- Uniform Test Method for Measuring the Energy Consumption of Distribution Transformers

SUBPART L -- ILLUMINATED EXIT SIGNS

§ 431. 201 Purpose and scope.

§ 431. 202 Definitions concerning illuminated exit signs.

TEST PROCEDURES

§ 431. 203 Materials incorporated by reference.

§ 431. 204 Uniform test method for the measurement of energy consumption of illuminated exit signs.

ENERGY CONSERVATION STANDARDS

§ 431. 206 Energy conservation standards and their effective dates.

SUBPART M -- TRAFFIC SIGNAL MODULES AND PEDESTRIAN MODULES

§ 431. 221 Purpose and scope.

§ 431. 222 Definitions concerning traffic signal modules and pedestrian modules.

TEST PROCEDURES

§ 431. 223 Materials incorporated by reference.

§ 431. 224 Uniform test method for the measurement of energy consumption for traffic signal modules and pedestrian modules.

§ 431. 226 Energy conservation standards and their effective dates.

SUBPART N -- UNIT HEATERS

§ 431. 241 Purpose and scope.

§ 431. 242 Definitions concerning unit heaters.

TEST PROCEDURES [RESRVED]

ENERGY CONSERVATION STANDARDS

§ 431. 246 Energy conservation standards and their effective dates.

SUBPART O -- COMMERCIAL PRERINSE SPRAY VALVES

§ 431. 261 Purpose and scope.

§ 431. 262 Definitions concerning commercial prerinse spray valves.

TEST PROCEDURES

§ 431. 263 Materials incorporated by reference.

§ 431. 264 Uniform test method for the measurement of flow rate of commercial prerinse spray valves.

ENERGY CONSERVATION STANDARDS

§ 431. 266 Energy conservation standards and their effective dates.

SUBPART P -- MERCURY VAPOR LAMP BALLASTS

§ 431. 281 Purpose and scope.

§ 431. 282 Definitions concerning mercury vapor lamp ballasts.

TEST PROCEDURES [RESERVED]

ENERGY CONSERVATION STANDARDS

§ 431. 286 Energy conservation standards and their effective dates.

SUBPART Q -- REFRIGERATED BOTTLED OR CANNED BEVERAGE VENDING MACHINES

§ 431. 291 Scope.

§ 431. 292 Definitions concerning refrigerated bottled or canned beverage vending machines.

TEST PROCEDURES

§ 431. 293 Materials incorporated by reference.

§ 431. 294 Uniform test method for the measurement of energy consumption of refrigerated bottled or canned beverage vending machines.

ENERGY CONSERVATION STANDARDS

§ 431. 296 Energy conservation standards and their effective dates.

SUBPART R -- WALK-IN COOLERS AND WALK-IN FREEZERS

§ 431. 301 Purpose and scope.

§ 431. 302 Definitions concerning walk-in coolers and walk-in freezers.

TEST PROCEDURES

§ 431. 303 Materials incorporated by reference.

§ 431. 304 Uniform test method for the measurement of energy consumption of walk-in coolers and walk-in freezers.

§ 431. 305 [Reserved]

ENERGY CONSERVATION STANDARDS

§ 431. 306 Energy conservation standards and their effective dates.

§ 431. 306 Energy conservation standards and their effective dates.

Appendix A to Subpart R of Part 431--Uniform Test Method for the Measurement of Energy Consumption of the Components of Envelopes of Walk-In Coolers and Walk-In Freezers

SUBPART S -- METAL HALIDE LAMP BALLASTS AND FIXTURES

§ 431. 321 Purpose and scope.

§ 431. 322 Definitions concerning metal halide lamp ballasts and fixtures.

TEST PROCEDURES

§ 431. 323 Materials incorporated by reference.

§ 431. 324 Uniform test method for the measurement of energy efficiency and standby mode energy consumption of metal halide lamp ballasts.

ENERGY CONSERVATION STANDARDS

§ 431. 326 Energy conservation standards and their effective dates.

SUBPART T -- [RESERVED]

SUBPART U -- ENFORCEMENT FOR ELECTRIC MOTORS

§ 431. 381 Purpose and scope for electric motors.

§ 431. 382 Prohibited acts.

§ 431. 383 Enforcement process for electric motors.

§ 431.384 [Reserved]

§ 431. 385 Cessation of distribution of a basic model of an electric motor.

§ 431. 386 Remedies.

§ 431. 387 Hearings and appeals.

Appendix A to Subpart U of Part 431 -- Sampling Plan for Enforcement Testing of Electric Motors

SUBPART V -- GENERAL PROVISIONS

§ 431. 401 Petitions for waiver and applications for interim waiver, of test procedure.

§ 431. 402 Preemption of State regulations for commercial HVAC & WH products.

§ 431. 403 Maintenance of records for electric motors.

§ 431. 404 Imported electric motors.

§ 431. 405 Exported electric motors.

§ 431. 406 Subpoena--Electric Motors.

§ 431. 407 Confidentiality--Electric Motors.

§ 431. 408 Preemption of State regulations for covered equipment other than electric motors and commercial heating, ventilating, air-conditioning and water heating products.

SUBPART W -- PETITIONS TO EXEMPT STATE REGULATION FROM PREEMPTION; PETITIONS TO WITHDRAW EXEMPTION OF STATE REGULATION

§ 431. 421 Purpose and scope.

§ 431. 422 Prescriptions of a rule.

§ 431. 423 Filing requirements.

§ 431. 424 Notice of petition.

§ 431. 425 Consolidation.

§ 431. 426 Hearing.

§ 431. 427 Disposition of petitions.

§ 431. 428 Effective dates of final rules.

§ 431. 429 Request for reconsideration.

§ 431. 430 Finality of decision.

SUBPART X -- SMALL ELECTRIC MOTORS

§ 431. 441 Purpose and scope.

§ 431. 442 Definitions.

TEST PROCEDURES

§ 431. 443 Materials incorporated by reference.

§ 431. 444 Test procedures for the measurement of energy efficiency.

§ 431. 445 Determination of small electric motor efficiency.

ENERGY CONSERVATION STANDARDS

§ 431. 446 Small electric motors energy conservation standards and their effective dates.

§ 431. 447 Department of Energy recognition of nationally recognized certification programs.

§ 431. 448 Procedures for recognition and withdrawal of recognition of certification programs.

History

• EFFECTIVE DATE: February 1, 2018 Secretary of State Rule Log #18-001
• STATUTORY AUTHORITY: 2017, No. 42 (adj. Sess.), § 1

Chapter 009 VERMONT APPLIANCE EFFICIENCY STANDARDS

31-009 Code Vt. R. 31-000-009-X VERMONT APPLIANCE EFFICIENCY STANDARDS

In 2018, the Vermont Legislature adopted Act 139, amending 9 V.SA. § 2795, and requiring the Commissioner of the Department of Public Service to "adopt rules in accordance with the provisions of 3 V.SA chapter 25 establishing minimum efficiency standards for the types of new products set forth in section 2794 of this title. " This rule sets minimum efficiency standards for seventeen products found in 9 V.SA. § 2792 to which the State's efficiency standards do not currently apply. Act 139 incorporates materials by reference in the "Definitions" ( § 2793) and "Efficiency and Water Conservation Standards" ( § 2795) sections of the Act. The Act articulates specific existing efficiency standards the Department of Public Service must adopt, as such, the entirety of this rule consists of the standards listed below and incorporated by reference without additional text.

Effective Date

Act 139, Sec. 5. amends 9 V.S.A § 2796(d) and specifies the effective dates of the standards provided herein as follows:

(1) On or after July 1, 2019, no new luminaire that is designed and marketed to operate with T12 fluorescent lamps may be sold or offered for sale in the State. This prohibition shall not apply to a luminaire that the seller purchased on or before June 30, 2019.

(2) On or after July 1, 2020, no new air compressor, commercial dishwasher, commercial fryer, commercial hot-food holding cabinet, commercial steam cooker, computer or computer monitor, high color rendering index (CRI) fluorescent lamp, portable electric spa, residential ventilating fn, spray sprinkler body, uninterruptible power supply, or water cooler may be sold or offered fr sale, lease, or rent in the State unless the efficiency of the new product meets or exceeds the efficiency standards set forth herein.

(3) On or after July 1, 2021, no new faucet, showerhead, or urinal may be sold or offered for sale, lease, or rent in the State unless the efficiency of the new product meets or exceeds the efficiency standards set forth herein.

(4) This rule governs the date after which no new portable air conditioner may be sold or offered for sale, lease, or rent in the State unless the efficiency of the new product meets or exceeds the efficiency standards set forth in Section U) of these rules (the compliance date).

(A) The compliance date shall be on or after February 1, 2022, unless subdivision (B) of thissubdivision (4) applies.

(B) If, prior to January 1, 2019, the U.S. Department of Energy (DOE) has published a final rule in the Federal Register establishing efficiency standards for portable air conditioners and the rule has not been repealed, voided, or retracted, the compliance date shall be on or after the date as of which portable air conditioners are required to comply with the DOE rule.

Definitions

"Dishwasher" as defined in the U.S. Code of Federal Regulations Title 10, Chapter II, Subchapter D, Part 431.12 ( 10 CFR 431.12)

"ENERGY STAR Program" is a federal program operated by the U.S. Environmental Protection Agency and defined in U.S. federal statute pursuant to chapter 42 section 7403(g) [ 42 U.S.C. § 7403(g)] .

"T12, fluorescent lamp" as defined by the American National Standards Institute in standard C78.81-2003

Efficiency and Water Conservation Standards

(a) Air Compressors: In this subdivision (1), "final rule" means the document setting forth a final action by the U.S. Department of Energy (DOE) with respect to a final rule for "Energy Conservation Standards for Air Compressors," docket no. EERE-2013-BT-STD-0040, the pre-publication final rule released by the U.S. Department of Energy for error correction review on December 5, 2016. Effective July 1, 2020, air compressors that meet the 12 criteria to be codified under 10 C.F.R. § 431.345(a) and set forth on pages 350 to 351 of the final rule shall meet the requirements contained in Table 1 on page 352 of the final rule using the instructions to be codified under 10 C.F.R. § 431.345(b) and set forth on page 353 of the final rule. Compliance with these requirements shall be measured in accordance with 10 C.F.R. Part 431, Subpart T, Appendix A, entitled "Uniform Test Method for Certain Air Compressors," as in effect on July 3, 2017.

(b) Commercial Dishwashers: Effective July 1, 2020, commercial dishwashers included in the scope of the "ENERGY STAR Program Requirements Product Specification for Commercial Dishwashers," Version 2.0, shall meet the qualification criteria of that specification. "ENERGY ST AR Program Requirements Product Specification for Commercial Dishwashers version 2.0" was developed by the U.S. Environmental Protection Agency and took effect on February 1, 2013.

(c) Commercial Fryers: Effective July 1, 2020, commercial fryers included in the scope of the "ENERGY ST AR Program Requirements Product Specification for Commercial Fryers," Version 2.0, shall meet the qualification criteria of that specification. "ENERGY STAR Program Requirements Product Specification for Commercial Fryers version 2.0" was developed by the U.S. Environmental Protection Agency and took effect on April 22, 2011.

(d) Hot-Food Holding Cabinets: Effective July 1, 2020, commercial hot-food holding cabinets shall have a maximum idle energy rate of 40 watts per cubic foot of interior volume, as determined by the "idle energy rate-dry test" in ASTM F2140-11, "Standard Test Method for Performance of Hot-Food Holding Cabinets," ASTM International (2011). Interior volume shall be measured as prescribed in the "ENERGY STAR Program Requirements Product Specification for Commercial Hot-Food Holding Cabinets," Version 2.0, developed by the U.S. Environmental Protection Agency, which took effect October 1, 2011.

(e) Commercial Steam Cookers: Effective July 1, 2020, commercial steam cookers shall meet the requirements of the "ENERGY ST AR Program Requirements Product Specification for Commercial Steam Cookers," Version 1.2., developed by the U.S. Environmental Protection Agency, effective August 1, 2003.

(f) Computers and Computer Monitors: Effective July 1, 2020, computers and computer monitors as defined in 20 California Code of Regulations (CCR) § 1602 shall meet the requirements of 20 California Code of Regulations (CCR) § 1605.3(v). "20 California Code of Regulations § 1605.3(v) " is the section of the CCR that contains the California state mandatory minimum energy efficiency requirements for computers and computer monitors. It was developed by the California Energy Commission and includes several different tiers of energy efficiency requirements for desktop computers, laptop computers and computer monitors.

(g) Faucets and Showerheads: Effective July 1, 2021, faucets, except for metering faucets, and showerheads shall meet the standards below when tested in accordance with 10 C.F.R. Part 430, Subpart B, Appendix S, entitled "Uniform Test Method for Measuring the Water Consumption of Faucets and Showerheads," as in effect on January 3, 2017.

i. Lavatory faucets and replacement aerators shall not exceed a maximum flow rate of 1.5 gallons perminute (gpm) at 60 pounds per square inch (psi).

ii. Residential kitchen faucets and replacement aerators shall not exceed a maximum flow rate of 1.8gpm at 60 psi, with optional temporary flow of 2.2 gpm, provided they default to a maximum flow rate of 1.8 gpm at 60 psi after each use.

iii. Public lavatory faucets and replacement aerators shall not exceed a maximum flow rate of 0.5 gpm at 60 psi.

iv. Showerheads shall not exceed a maximum flow rate of 2.0 gpm at 80 psi.

(h) High CRI fluorescent lamps: Effective July 1, 2020, high CRI fluorescent lamps shall meet the minimum efficacy requirements contained in 10 C.F.R. § 430.32(n)(4) as that subdivision existed on January 3, 2017. The energy efficiency of high CRI fluorescent lamps shall be measured in accordance with "Uniform Test Method for Measuring Average Lamp Efficacy (LE), Color Rendering Index (CRI), and Correlated Color Temperature (CCT) of Electric Lamps," as it appeared in 10 C.F.R. Part 430, Subpart B, Appendix R as it existed on January 3, 2017.

(i) Urinals: Effective July 1, 2021, urinals, other than trough-type urinals and urinals designed and marketed exclusively for use at prisons or mental health facilities, shall have a maximum flush volume of 0.5 gallons per flush when tested in accordance with "Uniform Test Method for Measuring the Water Consumption of Water Closets and Urinals," as described in the U.S. Code of Federal Regulation, 10 C.F.R. Part 430, Subpart B, Appendix T, as it appeared on January 3, 2017.

(j) Portable Air Conditioners: Effective February 1, 2022, portable air conditioners shall have a Combined Energy Efficiency Ratio (CEER), that is greater than or equal to: 1.04 x [SACC/(3.7177 x SACC [ 06384) ]], where "SACC" means seasonally adjusted cooling capacity expressed in Btu/hr. The CEER shall be measured in accordance with the "Uniform Test Method for Measuring the Energy Consumption of Portable Air Conditioners," 10 C.F.R. Part 430, Subpart B, Appendix CC as in effect on January 3, 2017.

(k) Portable Electric Spas: Effective July 1, 2020, portable electric spas shall meet the requirements of the American National Standard for Portable Electric Spa Energy Efficiency, ANSI/APSP/ICC-14 2014, as that standard exists on the effective date of this section, July 1, 2020.

(l) Residential Ventilating Fans: Effective July 1, 2020, residential ventilating fans shall meet the qualification criteria of the "ENERGY ST AR Program Requirements Product Specification for Residential Ventilating Fans," Version 3.2, developed by the U.S. Environmental Protection Agency which took effect on December 23, 2011.

(m) Spray Sprinkler Bodies: Effective July 1, 2020, spray sprinkler bodies shall include an integral pressure regulator and shall meet the water efficiency and performance criteria and other requirements of the Environmental Protection Agency's "WaterSense Specification for Spray Sprinkler Bodies," Version 1.0., which took effect on September 21, 2017.

(n) Uninterruptible Power Supplies: In this subdivision (14), "final rule" means the document setting forth a final action by DOE with respect to a final rule for "Energy Conservation Standards for Uninterruptible Power Supplies," released by the U.S. Department of Energy for error correction review on December 28, 2016 as part of docket no. EERE-20 l 6-BT-STD-0022.

Effective July 1, 2020, uninterruptible power supplies that use a National Electrical Manufacturer Association (NEMA) 1-1 SP or 5-1 SP input plug and have an alternating current (AC) output shall have an average load-adjusted efficiency that meets or exceed the values shown to be codified under 10 C.F.R. § 430.32(z)(3) and set forth on pages 193-194 of the final rule.

These requirements for Uninterruptible Power Supplies shall be measured in accordance with the "Uniform Test Method for Measuring the Energy Consumption of Battery Chargers," 10 C.F.R. Part 430, Subpart B, Appendix Y, entitled "Uniform Test Method for Measuring the Energy Consumption of Battery Chargers," as in effect on January 11, 2017.

These requirements for Uninterruptible Power Supplies shall be measured in accordance with the "Uniform Test Method for Measuring the Energy Consumption of Battery Chargers," 10 C.F.R. Part 430, Subpart B, Appendix Y as in effect on January 11, 2017.

(o) Water Coolers: Effective July 1, 2020, water coolers included in the scope of the "ENERGY STAR Program Requirements Product Specification for Water Coolers," Version 2.0, which took effect on February 1, 2014, shall have "on mode with no water draw" energy consumption less than or equal to the following values, measured in accordance with the test requirements of that specification:

(i) 0.16 kilowatt-hours (kWh) per day for cold-only units and cook and cold units;

(ii) 0.87 kWh per day for storage type hot and cold units; and

(iii) 0.18 kWh per day for on-demand hot and cold units.

History

• EFFECTIVE DATE:
• November 8, 2019 Secretary of State Rule Log #19-056
• STATUTORY AUTHORITY: Section 4. of Act No. 139 of 2018, amending 9 VS.A. § 2795