An official website of the United States government Here’s how you know Menu Search Search CONTACT US Protecting Our Climate by Reducing Use of HFCs Technology Transition Petitions Administrator grants technology transition petitions under subsection (i) of the AIM Act (10/7/2021). 1234 Hydrofluorocarbons (HFCs) are potent greenhouse gases (GHGs) intentionally developed as replacements for ozone-depleting substances (ODS) in the refrigeration, air conditioning, aerosols, fire suppression, and foam blowing sectors. They have global warming potentials (GWPs) (a measure of the relative climate impact of a GHG) that can be hundreds to thousands of times greater than carbon dioxide (CO2). HFC use is growing worldwide due to the phaseout of ODS and increasing use of refrigeration and air-conditioning equipment globally. The American Innovation and Manufacturing (AIM) Act was enacted by Congress on December 27, 2020. The AIM Act directs EPA to address hydrofluorocarbons (HFCs) by: phasing down production and consumption, maximizing reclamation and minimizing releases from equipment, and facilitating the transition to next-generation technologies through sector-based restrictions. This website provides information on HFCs, the AIM Act, and regulations promulgated under the AIM Act. What's New Administrator grants petitions under subsection (i) of the AIM Act (10/7/2021) EPA Published the HFC Allocation Final Rule (10/5/21) 2022 HFC Allowance Allocations issued (10/1/2021) HFC Phasedown HFC Allowance Allocations HFC Allocation Final Rule HFC Allocation Rule Reporting and Recordkeeping Market Characterizations (updated 9/23/2021) Technology Transitions Notice of petitions granted under subsection (i) of the AIM Act (10/7/2021) Petitions for Technology Transition Under Subsection (i) of the AIM Act Notice of Data Availability (5/25/2021) Resources Sector Fact Sheets AIM Act Kigali Amendment to the Montreal ProtocolEXIT Public Meetings Contact Us to ask a question, provide feedback, or report a problem. Discover. Accessibility Budget & Performance Contracting EPA www Web Snapshot Grants No FEAR Act Data Plain Writing Privacy Privacy and Security Notice Connect. Data.gov Inspector General Jobs Newsroom Open Government Regulations.gov Subscribe USA.gov White House Ask. Contact EPA EPA Disclaimers Hotlines FOIA Requests Frequent Questions Follow. LAST UPDATED ON NOVEMBER 18, 2021 We'd welcome your feedback! Would you take a brief survey so we can improve your experience on our site? Yes, I'll give feedback No thanks