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This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2025. This website is no longer updated and links to external websites and some internal pages may not work. More information »

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Significant New Alternatives Policy (SNAP) Program

  • Celebrating 30 Years of SNAP

    This year, SNAP is celebrating its 30th Anniversary! A final rule published March 18, 1994, established EPA's SNAP Program supporting a safe and smooth transition to alternatives to ozone-depleting substances.

  • Submit a Substitute

    Learn how manufacturers, formulators, and end-users can submit their proposed substitutes for ozone-depleting substances.

  • Final Technology Transitions Rule

    EPA issues a final rule under the AIM Act to restrict the use of HFCs in certain products and equipment. Learn more about HFCs in certain sectors and subsectors.

The Significant New Alternatives Policy Program (SNAP), established under the Clean Air Act, allows the EPA to evaluate substitutes for ozone-depleting substances and hydrofluorocarbons (HFCs) targeted by the American Innovation and Manufacturing Act (AIM). This program helps identify safer alternatives to reduce environmental and health risks. Learn how the EPA assesses these substitutes, the submission process, and why these alternatives are crucial for protecting human health and the environment. For more information, visit Protecting Our Climate By Reducing Use of HFCs page.

EPA SNAP - Significant New Alternatives Policy
What's New
  • EPA publishes notice expanding the list of substitutes as acceptable for refrigeration and air conditioning sector and foam blowing agents (12/11/2024)
  • EPA publishes new Q&A on use of UL Standard 60335-2-40 Edition 4 under SNAP Rules (7/30/2024)
  • EPA publishes final rule expanding the list of substitutes for refrigeration and air conditioning (6/13/2024)
  • EPA publishes final rule expanding the list of substitutes for refrigeration and air conditioning and fire suppression (4/28/2023)
  • SNAP Program Overview

    Learn about the purpose of the program.

    Learn about the Program
  • Regulations

    Learn about EPA’s regulations for substitutes.

    Explore Regulations
  • Substitute Information by Industrial Sector

    Learn more about SNAP criteria and guidelines for substitutes, and decisions for each industrial sector.

    Learn about Sectors
  • SNAP Application Information

    Learn about SNAP review, information for substitute submissions and forms, and additional guidance.

    Find SNAP Application Info
  • Unacceptable and Acceptable Substitutes Tables

    Learn more about the unacceptable and acceptable substitutes.

    Explore Substitutes
  • Resources

    Access the SNAP glossary, Frequently Asked Questions, and other resources.

    Find Resources
Ozone Layer Protection Milestones

Explore how successful ozone layer protection is a part of our everyday life.

Strat City

Related Programs

  • Protecting Our Climate by Reducing Use of HFCs
  • Ozone Layer Protection
  • Technology Transitions Program
Contact Us About the Significant New Alternatives Policy (SNAP) to ask a question, provide feedback, or report a problem.
Last updated on December 19, 2024
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