Data / Federal rules / 2025-19812

Protection of Stratospheric Ozone: Listing of Substitutes Under the Significant New Alternatives Policy Program in Refrigeration and Air Conditioning and Fire Suppression

The Environmental Protection Agency published this proposed rule in the Federal Register on November 10, 2025. Comments closed on December 26, 2025.

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What the agency says

Pursuant to the U.S. Environmental Protection Agency's Significant New Alternatives Policy 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.

Key facts

Document number: 2025-19812
Type: Proposed rule
Action: Proposed rule
Agency: Environmental Protection Agency
Published: November 10, 2025
Comments due: December 26, 2025
Dates: Comments must be received on or before December 26, 2025 unless a public hearing is held. If a public hearing is held, comments on this notice of proposed rulemaking must be received on or before date 30 days after date of public hearing. 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: [email protected] by 5 p.m. Eastern Daylight Time on or before November 17, 2025. If a public hearing is held, it will take place on or around November 25, 2025. Please refer to the
Docket: EPA-HQ-OAR-2024-0503; FRL-12207-01-OAR
Regulation ID (RIN): 2060-AW45
Code of Federal Regulations: 40 CFR 82
Topics: Administrative practice and procedure; Air pollution control; Chemicals; Environmental protection
Pages: 46

The document on federalregister.gov PDF

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