WTO notification · TBT
United StatesAdopted, according to its latest notice
Official title
Energy Conservation Program: Test Procedures for Commercial Warm Air Furnaces
The United States issued an addendum on 8 October 2026 to the earlier TBT notification G/TBT/N/USA/1840. Addenda often report that a measure was adopted, changed, postponed or withdrawn. The measure was first notified on 28 February 2022. The comment period closed on 15 July 2025.
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Commercial warm air furnaces; Furnace burners for liquid fuel, for pulverized solid fuel or for gas; mechanical stokers, incl. their mechanical grates, mechanical ash dischargers and similar appliances; parts thereof; Quality; Test conditions and procedures i
Latest notice (G/TBT/N/USA/1840/Rev.1/Add.1, 8 October 2026)
The latest notice says the measure was adopted or published.
Energy Conservation Program: Test Procedures for Commercial Warm Air Furnaces
The Department of Energy (''DOE'' or ''the Department'') is withdrawing the test procedure for commercial warm air furnaces adopted under the Energy Policy and Conservation Act, specifically appendix B, ''Uniform Test Method for Measurement of the Energy Efficiency of Commercial Warm Air Furnaces (Thermal Efficiency Two).'' Upon reconsideration, DOE has determined that appendix B would have an uncertain increase in representativeness that does not outweigh the likely increase in burden. DOE has also determined that withdrawing the appendix B test procedure would be consistent with the proposed Process Rule, which states that for certain categories of equipment, including CWAFs, DOE will adopt the industry test procedure, as contemplated by EPCA, except in very limited circumstances. Commercial warm air furnaces will continue to be subject to the testing requirements of appendix A, ''Uniform Test Method for Measurement of the Energy Efficiency of Commercial Warm Air Furnaces (Thermal Efficiency).'' The effective date of this rule is 7 December 2026. 91 Federal Register (FR) 64105, 7 October 2026; Title 10 Code of Federal Regulations (CFR) Part 431: This final rule and the proposed rule; request for comment notified as G/TBT/N/USA/1840/Rev.1 are identified by Docket Number EERE-2025-BT-TP-0035. The Docket Folder is available from Regulations.gov at and provides access to primary and supporting documents as well as comments received. Documents are also accessible from…
Proposed rule; request for comment - The Department of Energy (DOE or the Department) is proposing to amend the test procedure for commercial warm air furnaces adopted under the Energy Policy and Conservation Act (EPCA) by rescinding Appendix B, ''Uniform Test Method for Measurement of the Energy Efficiency of Commercial Warm Air Furnaces (Thermal Efficiency Two).'' Upon further evaluation, the Department has tentatively determined that Appendix B is unduly burdensome to conduct, thereby failing to meet the statutory criteria for adoption of a test procedure. Commercial warm air furnaces will continue to be subject to the testing requirements of Appendix A, ''Uniform Test Method for Measurement of the Energy Efficiency of Commercial Warm Air Furnaces (Thermal Efficiency).'' DOE invites public input on its proposal. DOE will hold a public meeting webinar on Thursday, 29 May 2025 from 1:00 p.m. to 4:00 p.m. Eastern Time. See section V (Public Participation) for registration information, participant instructions, and information about the capabilities available to webinar participants.
Every notice about this measure published here, newest first. Each one is the notifying member's own text.
AddendumG/TBT/N/USA/1840/Rev.1/Add.1
Energy Conservation Program: Test Procedures for Commercial Warm Air Furnaces
The Department of Energy (''DOE'' or ''the Department'') is withdrawing the test procedure for commercial warm air furnaces adopted under the Energy Policy and Conservation Act, specifically appendix B, ''Uniform Test Method for Measurement of the Energy Efficiency of Commercial Warm Air Furnaces (Thermal Efficiency Two).'' Upon reconsideration, DOE has determined that appendix B would have an uncertain increase in representativeness that does not outweigh the likely increase in burden. DOE has also determined that withdrawing the appendix B test procedure would be consistent with the proposed Process Rule, which states that for certain categories of equipment, including CWAFs, DOE will adopt the industry test procedure, as contemplated by EPCA, except in very limited circumstances. Commercial warm air furnaces will continue to be subject to the testing requirements of appendix A, ''Uniform Test Method for Measurement of the Energy Efficiency of Commercial Warm Air Furnaces (Thermal Efficiency).'' The effective date of this rule is 7 December 2026. 91 Federal Register (FR) 64105, 7 October 2026; Title 10 Code of Federal Regulations (CFR) Part 431: This final rule and the proposed rule; request for comment notified as G/TBT/N/USA/1840/Rev.1 are identified by Docket Number EERE-2025-BT-TP-0035. The Docket Folder is available from Regulations.gov at and provides access to primary and supporting documents as well as comments received. Documents are also accessible from…
RevisionG/TBT/N/USA/1840/Rev.1
Comment deadline: Closed on 15 July 2025
Energy Conservation Program: Test Procedures for Commercial Warm Air Furnaces
Proposed rule; request for comment - The Department of Energy (DOE or the Department) is proposing to amend the test procedure for commercial warm air furnaces adopted under the Energy Policy and Conservation Act (EPCA) by rescinding Appendix B, ''Uniform Test Method for Measurement of the Energy Efficiency of Commercial Warm Air Furnaces (Thermal Efficiency Two).'' Upon further evaluation, the Department has tentatively determined that Appendix B is unduly burdensome to conduct, thereby failing to meet the statutory criteria for adoption of a test procedure. Commercial warm air furnaces will continue to be subject to the testing requirements of Appendix A, ''Uniform Test Method for Measurement of the Energy Efficiency of Commercial Warm Air Furnaces (Thermal Efficiency).'' DOE invites public input on its proposal. DOE will hold a public meeting webinar on Thursday, 29 May 2025 from 1:00 p.m. to 4:00 p.m. Eastern Time. See section V (Public Participation) for registration information, participant instructions, and information about the capabilities available to webinar participants.
AddendumG/TBT/N/USA/1840/Add.3
Energy Conservation Program: Commercial Warm Air Furnaces; Final Determination
On 2 June 2023, the U.S. Department of Energy (''DOE'' or the ‘’Department'') published a test procedure final rule (notified as G/TBT/N/USA/1840/Add.1) which established test procedures for commercial warm air furnaces (''CWAFs''). On 1 August 2023, the Air-Conditioning, Heating, and Refrigeration Institute (''AHRI'') filed a petition for review of the final rule in the United States Court of Appeals for the Fourth Circuit. In a 6 February 2024, order, the Fourth Circuit granted a voluntary remand of the final rule to the Department of Energy (''DOE'') to determine whether establishment of the test procedure for the thermal efficiency two (''TE2'') metric is supported by the specific provisions applicable to CWAFs under the Energy Policy and Conservation Act (''EPCA''). More specifically, DOE agreed in this voluntary remand to not enforce the TE2 test procedure unless and until the Department determines that the TE2 test procedure is consistent with the amended industry test procedure, or determines, supported by clear and convincing evidence, that the amended industry test procedure fails to satisfy the statutory requirements. This document provides DOE's determination that the amended industry test procedure fails to satisfy EPCA's statutory requirements. The effective date of 3 July 2023, for the TE2 test procedure is confirmed. 90 Federal Register (FR) 5560, 17 January 2025; Title 10 Code of Federal Regulations (CFR) Part 431: This action is identified by Docket Number…
AddendumG/TBT/N/USA/1840/Add.2
Comment deadline: Closed on 8 January 2025
Energy Conservation Program: Commercial Warm Air Furnaces; Notification of Tentative Determination and Request for Comment
On 2 June 2023, the U.S. Department of Energy ('DOE'' or the 'Department'') published a test procedure final rule (notified as G/TBT/N/USA/1840/Add.1) which established test procedures for commercial warm air furnaces ('CWAFs''). The Air-Conditioning, Heating, and Refrigeration Institute ('AHRI'') filed a petition for review of the final rule in the United States Court of Appeals for the Fourth Circuit on 1 August 2023. In a 6 February 2024, order, the Fourth Circuit granted a voluntary remand of the final rule to the Department of Energy ('DOE'') to determine whether establishment of the test procedure for the thermal efficiency two ('TE2'') metric is supported by the specific provisions applicable to CWAFs under the Energy Policy and Conservation Act ('EPCA''). More specifically, DOE agreed in this voluntary remand to only establish the TE2 test procedure if the Department makes a determination that the TE2 test procedure is consistent with the amended industry test procedure, or a determination, supported by clear and convincing evidence, that the amended industry test procedure fails to satisfy the statutory requirements. This document provides DOE's tentative determination that the amended industry test procedure fails to satisfy EPCA's statutory requirements and requests comment on this topic. DOE will accept comments, data, and information regarding this document no later than 8 January 2025. 89 Federal Register (FR) 104859, 26 December 2024; Title 10 Code of Federal…
AddendumG/TBT/N/USA/1840/Add.1
Energy Conservation Program: Test Procedure for Commercial Warm Air Furnaces
TITLE: Energy Conservation Program: Test Procedure for Commercial Warm Air Furnaces AGENCY: Office of Energy Efficiency and Renewable Energy, Department of Energy ACTION: Final rule SUMMARY: The U.S. Department of Energy (DOE) is amending the Federal test procedures for commercial warm air furnaces (CWAFs) to incorporate the latest versions of the industry test standards that are currently incorporated by reference. DOE is also establishing a new metric, Thermal Efficiency Two (TE2), and corresponding test procedure. Use of the newly established test procedure would become mandatory at such time as compliance with amended energy conservation standards based on TE2 is required, should DOE adopt such standards. DOE also is adopting additional specifications for CWAFs with multiple flue outlets or small flue outlets. DATES: The effective date of this rule is 3 July 2023. These amendments will be mandatory for CWAF equipment testing starting 28 May 2024. The incorporation by reference of certain material listed in this rule is approved by the Director of the Federal Register on 3 July 2023. This final rule and the notice of proposed rulemaking; announcement of public meeting notified as G/TBT/N/USA/1840 are identified by Docket Number EERE-2019-BT-TP-0041. The Docket Folder is available from Regulations.gov at and provides access to primary and supporting documents as well as comments received. Documents are also accessible from Regulations.gov by searching the Docket Number.
Regular notificationG/TBT/N/USA/1840
Comment deadline: Closed on 26 April 2022
Energy Conservation Program: Test Procedure for Commercial Warm Air Furnaces
Notice of proposed rulemaking and announcement of public meeting - The U.S. Department of Energy ('DOE') proposes to amend the test procedures for commercial warm air furnaces ('CWAFs') to incorporate the latest versions of the industry standards that are currently incorporated by reference. DOE also proposes to establish a new metric, Thermal Efficiency Two ('TE2'), and corresponding test procedure. Use of the newly proposed test procedure would become mandatory at such time as compliance with amended energy conservation standards based on TE2 is required, should DOE adopt such standards. DOE also proposes additional specifications for CWAFs with multiple vent hoods or small-diameter vent hoods. DOE is seeking comment from interested parties on the proposal.
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