R22 refrigerant has been used for years in central air conditioners, heat pumps, mini-splits, car AC systems, and other refrigeration equipment. It's the key to absorbing and removing heat from a space. You might also hear R22 refrigerant called by its chemical name, hydrochlorofluorocarbon 22 (HCFC-22).
AC retrofit during service calls: convert R22 equipment to Freon MO99 refrigerant
Air conditioning systems installed before 2004 which use R22 refrigerant require. The R22 Phase Out is an opportunity to replace an ageing and inefficient air .