In accordance with terms and agreement reached in the Montreal Protocol (The Montreal Protocol on Substances that Deplete the Ozone Layer), theunited states environmental protection agency has mandated that production or import ofR-22 along with other hydrochloroflourocarbon (HCFCs) be phased out in the United States. In the EU and the US, virgin 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. Today, all newly manufactured window unit air conditioners and mini split air conditioners in the United States come with R-410A.From the beginning of 2020, the production and importation of R-22 will be banned, after which the only available sources of R-22 will be that which has been stockpiled or recovered from existing devices.
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