R-22
- R-22, also referred to as Chlorodifluoromethane or difluoromonochloromethane, is a hydrochlorofluorocarbon (HCFC) known as HCFC-22 or R-22.
R-290
- R290 (propane) is a new type of environmentally friendly refrigerant aimed to replace R22 and R502, and it is compatible with the original system and lubricants.