R-410A

R-410A is a refrigerant used in air conditioning and heat pump applications. It is a zeotropic but near-azeotropic mixture of difluoromethane (CH2F2, called R-32) and pentafluoroethane (CHF2CF3, called R-125). R-410A is sold under the trademarked names AZ-20, EcoFluor R410, Forane 410A, Genetron R410A, Puron, and Suva 410A.

On December 27, 2020, the United States Congress passed the American Innovation and Manufacturing (AIM) Act, which directs US Environmental Protection Agency (EPA) to phase down production and consumption of hydrofluorocarbons (HFCs).[1][2] The AIM act was passed because HFCs have high global warming potential. Rules developed under the AIM Act require HFC production and consumption to be reduced by 85% from 2022 to 2036.[3] R-410A will be restricted by this Act because it contains the HFC R-125. Other refrigerants with lower global warming potential will replace R-410A in most applications, just as R-410A replaced the earlier ozone-depleting refrigerant, R-22.[4]

  1. ^ "Protecting Our Climate by Reducing Use of HFCs". US Environmental Protection Agency. 8 February 2021. Retrieved 25 August 2022.
  2. ^ "Background on HFCs and the AIM Act". www.usepa.gov. US EPA. Retrieved 27 June 2024.
  3. ^ EPA Press Office (23 September 2021). "U.S. Will Dramatically Cut Climate-Damaging Greenhouse Gases with New Program Aimed at Chemicals Used in Air Conditioning, Refrigeration". US Environmental Protection Agency. Retrieved 25 August 2022.
  4. ^ "Choosing a New System?". California Air Resources Board. Retrieved 25 August 2022.