WTO notification · TBT
United StatesAdopted, according to its latest notice
Official title
Phasedown of Hydrofluorocarbons: Reconsideration of Certain Regulatory Requirements Promulgated Under the Technology Transitions Provisions of the American Innovation and Manufacturing Act of 2020
The United States issued an addendum on 28 May 2026 to the earlier TBT notification G/TBT/N/USA/2242. Addenda often report that a measure was adopted, changed, postponed or withdrawn. The measure was first notified on 17 November 2025. The comment period closed on 21 November 2025.
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Published here:
Updated here:
Hydrofluorocarbons; Environmental protection; Production in the chemical industry; Products of the chemical industry
Latest notice (G/TBT/N/USA/2242/Add.2, 28 May 2026)
The latest notice says the measure was adopted or published.
Phasedown of Hydrofluorocarbons: Reconsideration of Certain Regulatory Requirements Promulgated Under the Technology Transitions Provisions of the American Innovation and Manufacturing Act of 2020
The U.S. Environmental Protection Agency (EPA) is finalizing changes to regulations promulgated under the Technology Transitions provision of the American Innovation and Manufacturing Act of 2020 (AIM Act), which authorizes the Administrator to restrict fully, partially, or on a graduated schedule, the use of a ''regulated substance'' in the sector or subsector in which they are used. This final rule addresses administrative petitions and input received from regulated industry and other interested parties relevant to requirements and restrictions across various refrigeration and air conditioning subsectors, including: refrigerated transport--intermodal containers; industrial process refrigeration and chillers for industrial process refrigeration used in semiconductor manufacturing; retail food supermarket systems; retail food remote condensing unit systems; cold storage warehouses; refrigerated laboratory centrifuges and laboratory shakers; and condensing units in residential and light commercial air conditioning and heat pumps. This final rule also allows the inventory of residential and light commercial air conditioning and heat pump equipment that was manufactured in the United States or imported into the United States before 1 January 2025, to continue to be installed. This final rule is effective on 27 July 2026. 91 Federal Register (FR) 31284, 26 May 2026; Title 40 Code of Federal Regulations (CFR) Part 84: This final rule and previous actions notified under the…
Proposed rule - The Environmental Protection Agency is proposing changes to regulations promulgated under the Technology Transitions section of the American Innovation and Manufacturing Act of 2020, which authorizes the Administrator to restrict the use of particular hydrofluorocarbons in the sectors and subsectors in which they are used. This proposal addresses administrative petitions and other requests from companies and trade associations across a number of subsectors, including refrigerated transport--intermodal containers, industrial process refrigeration and chillers for industrial process refrigeration used in semiconductor manufacturing, retail food refrigeration systems for remote condensing units and supermarkets, cold storage warehouses, refrigerated laboratory centrifuges, laboratory shakers, and condensing units in residential and light commercial air conditioning and heat pumps. This action proposes to allow previously manufactured and imported residential and light commercial air conditioning and heat pump equipment to continue to be installed. The Agency is also seeking advance comment on potential actions to address supply chain issues for a refrigerant blend.
Every notice about this measure published here, newest first. Each one is the notifying member's own text.
AddendumG/TBT/N/USA/2242/Add.2
Phasedown of Hydrofluorocarbons: Reconsideration of Certain Regulatory Requirements Promulgated Under the Technology Transitions Provisions of the American Innovation and Manufacturing Act of 2020
The U.S. Environmental Protection Agency (EPA) is finalizing changes to regulations promulgated under the Technology Transitions provision of the American Innovation and Manufacturing Act of 2020 (AIM Act), which authorizes the Administrator to restrict fully, partially, or on a graduated schedule, the use of a ''regulated substance'' in the sector or subsector in which they are used. This final rule addresses administrative petitions and input received from regulated industry and other interested parties relevant to requirements and restrictions across various refrigeration and air conditioning subsectors, including: refrigerated transport--intermodal containers; industrial process refrigeration and chillers for industrial process refrigeration used in semiconductor manufacturing; retail food supermarket systems; retail food remote condensing unit systems; cold storage warehouses; refrigerated laboratory centrifuges and laboratory shakers; and condensing units in residential and light commercial air conditioning and heat pumps. This final rule also allows the inventory of residential and light commercial air conditioning and heat pump equipment that was manufactured in the United States or imported into the United States before 1 January 2025, to continue to be installed. This final rule is effective on 27 July 2026. 91 Federal Register (FR) 31284, 26 May 2026; Title 40 Code of Federal Regulations (CFR) Part 84: This final rule and previous actions notified under the…
AddendumG/TBT/N/USA/2242/Add.1
Comment deadline: Closed on 21 November 2025
Phasedown of Hydrofluorocarbons: Reconsideration of Certain Regulatory Requirements Promulgated Under the Technology Transitions Provisions of the American Innovation and Manufacturing Act of 2020
On 3 October 2025, the Environmental Protection Agency (EPA) published a proposed rule titled 'Phasedown of Hydrofluorocarbons: Reconsideration of Certain Regulatory Requirements Promulgated Under the Technology Transitions Provisions of the American Innovation and Manufacturing Act of 2020.' (notified as G/TBT/N/USA/2242) The EPA is extending the comment period for this proposed rule. The comment period for the proposed rule published on 3 October 2025, at 90 FR 47999, is extended. Comments must be received on or before 21 November 2025. 90 Federal Register (FR) 51042, 14 November 2025; Title 40 Code of Federal Regulations (CFR) Parts 84: This extension of public comment period and the proposed rule notified as G/TBT/N/USA/2242 is identified by Docket Number EPA-HQ-OAR-2025-0005. 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. WTO Members and their stakeholders are asked to submit comments to the USA TBT Enquiry Point by or before 4pm Eastern Time on 21 November 2025. Comments received by the USA TBT Enquiry Point from WTO Members and their stakeholders will be shared with EPA and submitted to the Docket if received within the comment period.
Regular notificationG/TBT/N/USA/2242
Comment deadline: Closed on 17 November 2025
Phasedown of Hydrofluorocarbons: Reconsideration of Certain Regulatory Requirements Promulgated Under the Technology Transitions Provisions of the American Innovation and Manufacturing Act of 2020
Proposed rule - The Environmental Protection Agency is proposing changes to regulations promulgated under the Technology Transitions section of the American Innovation and Manufacturing Act of 2020, which authorizes the Administrator to restrict the use of particular hydrofluorocarbons in the sectors and subsectors in which they are used. This proposal addresses administrative petitions and other requests from companies and trade associations across a number of subsectors, including refrigerated transport--intermodal containers, industrial process refrigeration and chillers for industrial process refrigeration used in semiconductor manufacturing, retail food refrigeration systems for remote condensing units and supermarkets, cold storage warehouses, refrigerated laboratory centrifuges, laboratory shakers, and condensing units in residential and light commercial air conditioning and heat pumps. This action proposes to allow previously manufactured and imported residential and light commercial air conditioning and heat pump equipment to continue to be installed. The Agency is also seeking advance comment on potential actions to address supply chain issues for a refrigerant blend.
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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