WTO notification · TBT
United StatesUpdated: check whether it is now adopted or in force
Official title
Protection of Stratospheric Ozone: Listing of Substitutes Under the Significant New Alternatives Policy Program in Refrigeration and Air Conditioning and Fire Suppression
The United States issued an addendum on 8 April 2026 to the earlier TBT notification G/TBT/N/USA/1013. Addenda often report that a measure was adopted, changed, postponed or withdrawn. The measure was first notified on 23 July 2015. The comment period closed on 6 May 2026.
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Substitutes for use in residential and light commercial air conditioning and heat pumps, chillers, household refrigerators and freezers, motor vehicle air conditioning, and fire suppression and explosion protection; Quality; Environmental protection; Ignit
The comment period closed on 6 May 2026. You can still raise concerns about the measure with your country's WTO TBT enquiry point, quoting the document symbol G/TBT/N/USA/1013/Rev.1/Add.1; it can take them up with the United States.
Find your country's enquiry point on WTO ePing (opens in a new tab)Latest notice (G/TBT/N/USA/1013/Rev.1/Add.1, 8 April 2026)
Protection of Stratospheric Ozone: Listing of Substitutes Under the Significant New Alternatives Policy Program in Refrigeration and Air Conditioning and Fire Suppression; Supplemental Notice of Proposed Rulemaking
Supplemental proposed rule - Pursuant to the U.S. Environmental Protection Agency's Significant New Alternatives Policy program, this action proposes to list the refrigerant 2,3,3,3-tetrafluoropropene, also known as HFO-1234yf, as acceptable, subject to use conditions, in the motor vehicle air conditioning end-use for retrofit of heavy-duty pickup trucks and complete heavy-duty vans. This action supplements the Agency's 10 November 2025 proposal with respect to the proposed listings in the motor vehicle air conditioning end-use for retrofit of heavy-duty pickup trucks and heavy-duty vans (both complete and incomplete vans). The EPA is also supplementing that proposal to clarify the intended scope of that proposed rule. The EPA is providing an opportunity for public comment on the additional listing and the clarification. The EPA is not reopening the comment period for any portions of the 10 November 2025 proposal, which are not explicitly addressed in this supplemental proposal. Public hearing: Any party requesting a public hearing must notify the contact listed in the FOR FURTHER INFORMATION CONTACT section, which is Emily Maruyama at email address: maruyama.emily@epa.gov by 5 p.m. Eastern Daylight Time on or before 13 April 2026. If a public hearing is held, it will take place on or around 21 April 2026. Please refer to the SUPPLEMENTARY INFORMATION section for additional information on the public hearing. 91 Federal Register (FR) 17176, 6 April 2026; Title 40 Code of…
Proposed rule - Pursuant to the U.S. Environmental Protection Agency's Significant New Alternatives Policy (SNAP) program, this action proposes to list several substitutes as acceptable, subject to use conditions, for residential and light commercial air conditioning and heat pumps, chillers, household refrigerators and freezers, motor vehicle air conditioning, and fire suppression and explosion protection. This action also proposes to update use conditions for substitutes previously listed for certain air conditioning end-uses and for water coolers.
Every notice about this measure published here, newest first. Each one is the notifying member's own text.
AddendumG/TBT/N/USA/1013/Rev.1/Add.1
Comment deadline: Closed on 6 May 2026
Protection of Stratospheric Ozone: Listing of Substitutes Under the Significant New Alternatives Policy Program in Refrigeration and Air Conditioning and Fire Suppression; Supplemental Notice of Proposed Rulemaking
Supplemental proposed rule - Pursuant to the U.S. Environmental Protection Agency's Significant New Alternatives Policy program, this action proposes to list the refrigerant 2,3,3,3-tetrafluoropropene, also known as HFO-1234yf, as acceptable, subject to use conditions, in the motor vehicle air conditioning end-use for retrofit of heavy-duty pickup trucks and complete heavy-duty vans. This action supplements the Agency's 10 November 2025 proposal with respect to the proposed listings in the motor vehicle air conditioning end-use for retrofit of heavy-duty pickup trucks and heavy-duty vans (both complete and incomplete vans). The EPA is also supplementing that proposal to clarify the intended scope of that proposed rule. The EPA is providing an opportunity for public comment on the additional listing and the clarification. The EPA is not reopening the comment period for any portions of the 10 November 2025 proposal, which are not explicitly addressed in this supplemental proposal. Public hearing: Any party requesting a public hearing must notify the contact listed in the FOR FURTHER INFORMATION CONTACT section, which is Emily Maruyama at email address: maruyama.emily@epa.gov by 5 p.m. Eastern Daylight Time on or before 13 April 2026. If a public hearing is held, it will take place on or around 21 April 2026. Please refer to the SUPPLEMENTARY INFORMATION section for additional information on the public hearing. 91 Federal Register (FR) 17176, 6 April 2026; Title 40 Code of…
RevisionG/TBT/N/USA/1013/Rev.1
Comment deadline: Closed on 26 December 2025
Protection of Stratospheric Ozone: Listing of Substitutes Under the Significant New Alternatives Policy Program in Refrigeration and Air Conditioning and Fire Suppression
Proposed rule - Pursuant to the U.S. Environmental Protection Agency's Significant New Alternatives Policy (SNAP) program, this action proposes to list several substitutes as acceptable, subject to use conditions, for residential and light commercial air conditioning and heat pumps, chillers, household refrigerators and freezers, motor vehicle air conditioning, and fire suppression and explosion protection. This action also proposes to update use conditions for substitutes previously listed for certain air conditioning end-uses and for water coolers.
AddendumG/TBT/N/USA/1013/Add.8
Protection of Stratospheric Ozone: Determination 39 for the Significant New Alternatives Policy Program
This determination of acceptability expands the list of acceptable substitutes pursuant to the U.S. Environmental Protection Agency's Significant New Alternatives Policy program. This action lists four substitutes as acceptable additional substitutes for use in the refrigeration and air conditioning and foam blowing sectors. This determination is applicable on 11 December 2024. 89 Federal Register (FR) 99720, 11 December 2024; Title 40 Code of Federal Regulations (CFR) Part 82: This determination of acceptability and previous actions notified under the symbol G/TBT/N/USA/1013 are identified by Docket Number EPA-HQ-OAR-2003-0118. The Docket Folder is available on 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.
AddendumG/TBT/N/USA/1013/Add.7
Protection of Stratospheric Ozone: Determination 38 for Significant New Alternatives Policy Program
This determination of acceptability expands the list of acceptable substitutes pursuant to the U.S. Environmental Protection Agency's Significant New Alternatives Policy program. This action lists as acceptable additional substitutes for use in the refrigeration and air conditioning and fire suppression sectors. This determination is applicable on 8 September 2023. Refer to 40 CFR 82 for further details: This determination of acceptability and previous actions notified as G/TBT/N/USA/1013 are identified by Docket Number EPA-HQ-OAR-2003-0118. The Docket Folder is available on 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.
AddendumG/TBT/N/USA/1013/Add.6
Protection of Stratospheric Ozone: Determination 30 for Significant New Alternatives Policy Program
TITLE: Protection of Stratospheric Ozone: Determination 37 for Significant New Alternatives Policy Program AGENCY: Environmental Protection Agency (EPA) ACTION: Determination of acceptability SUMMARY: This determination of acceptability expands the list of acceptable substitutes pursuant to the U.S. Environmental Protection Agency's Significant New Alternatives Policy program. This action lists as acceptable additional substitutes for use in the refrigeration and air conditioning; foam blowing; aerosols; cleaning solvents; and adhesives, coatings, and inks sectors. This determination is applicable on 20 January 2022. This determination of acceptability and previous actions notified as G/TBT/N/USA/1013 are identified by Docket Number EPA-HQ-OAR-2003-0118. The Docket Folder is available on 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.
AddendumG/TBT/N/USA/1013/Add.5
Protection of Stratospheric Ozone: Determination 30 for Significant New Alternatives Policy Program
AGENCY: Environmental Protection Agency (EPA) ACTION: Determination of acceptability SUMMARY: This determination of acceptability expands the list of acceptable substitutes pursuant to the U.S. Environmental Protection Agency's (EPA) Significant New Alternatives Policy (SNAP) program. This action lists as acceptable additional substitutes for use in the refrigeration and air conditioning, foam blowing, and fire suppression sectors. This determination is applicable on 11 December 2020. This determination of acceptability and previous actions notified under the symbol G/TBT/N/USA/1013 are identified by Docket Number EPA-HQ-OAR-2003-0118. The Docket Folder is available on Regulations.gov at and provides access to primary documents as well as comments received. Documents are also accessible from Regulations.gov by searching the Docket Number.
AddendumG/TBT/N/USA/1013/Add.4
TITLE: Protection of Stratospheric Ozone: Determination 34 for Significant New Alternatives Policy Program AGENCY: Environmental Protection Agency (EPA) ACTION: Determination of acceptability SUMMARY: This determination of acceptability expands the list of acceptable substitutes pursuant to the U.S. Environmental Protection Agency's (EPA) Significant New Alternatives Policy (SNAP) program. This action lists as acceptable additional substitutes for use in the refrigeration and air conditioning, f
AddendumG/TBT/N/USA/1013/Add.3
TITLE: Protection of Stratospheric Ozone: Determination 33 for Significant New Alternatives Policy Program AGENCY: Environmental Protection Agency (EPA) ACTION: Determination of acceptability SUMMARY: This determination of acceptability expands the list of acceptable substitutes pursuant to the U.S. Environmental Protection Agency's (EPA) Significant New Alternatives Policy (SNAP) program. This action lists as acceptable additional substitutes for use in the refrigeration and air conditioning se
AddendumG/TBT/N/USA/1013/Add.2
TITLE: Protection of Stratospheric Ozone: Determination 32 for Significant New Alternatives Policy Program AGENCY: Environmental Protection Agency (EPA) ACTION: Determination of acceptability SUMMARY: This determination of acceptability expands the list of acceptable substitutes pursuant to the U.S. Environmental Protection Agency's (EPA) Significant New Alternatives Policy (SNAP) program. This action lists as acceptable additional substitutes for use in the refrigeration and air conditioning se
AddendumG/TBT/N/USA/1013/Add.1
TITLE: Protection of Stratospheric Ozone: Determination 31 for Significant New Alternatives Policy Program AGENCY: Environmental Protection Agency (EPA) ACTION: Determination of acceptability SUMMARY: This determination of acceptability expands the list of acceptable substitutes pursuant to the U.S. Environmental Protection Agency's (EPA) Significant New Alternatives Policy (SNAP) program. This action lists as acceptable additional substitutes for use in the refrigeration and air conditioning se
Regular notificationG/TBT/N/USA/1013
Protection of Stratospheric Ozone: Determination 30 for Significant New Alternatives Policy Program (14 pages, in English)
This determination of acceptability expands the list of acceptable substitutes pursuant to the U.S. Environmental Protection Agency's (EPA) Significant New Alternatives Policy (SNAP) program. This action lists as acceptable additional substitutes for use in the refrigeration and air conditioning; foam blowing; solvent cleaning; aerosols; and adhesives, coatings, and inks sectors.
Expodite writes its summary from the official record. The notification and the documents it notifies are on the WTO's own websites.
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