text: In accordance with terms and agreement reached in the Montreal Protocol (The Montreal Protocol on Substances That Deplete the Ozone Layer), the United States Environmental Protection Agency has mandated that production or import of R-22 along with other hydrochlorofluorocarbons (HCFCs) be phased out in the United States. In the E.U. and the U.S., R-22 cannot be used in the manufacture of new air conditioning or similar units from 1 January 2010. In other parts of the world, the phase-out date varies from country to country. All newly manufactured window air conditioners and mini split air conditioners in the United States come with R-410A. Since 1 January 2020, the production and importation of R-22 has been banned; the only available sources of R-22 include that which has been stockpiled or recovered from existing devices.
  R-410A use expanded globally and rapidly as it replaced R-22.