HVAC: Refrigerant R22 and the impact of phase out
R22 is a commonly used refrigerant that has been used in the HVAC system manufactured before 2010. R22 is considered an ozone-depleting substance and therefore regulated by the EPA. Per the EPA, as of Jan 1, 2020, the US will stop manufacturing R22 and prohibit the installation of new appliances that require the use of …