Freon R–12 and R–22 as a refrigerant for air conditioning systems has been phased out due to the harmful effects of chlorinated fluorocarbons on the atmosphere. Today, almost all new air conditioning systems being manufactured use environmentally safe R–410A refrigerant. All new Carrier AC systems use Carrier’s Puron refrigerant, a trademarked brand of R–410A refrigerant. For our customers with older systems that use older refrigerants, we can make repairs and recharge their systems, using the earlier refrigerants, recycled from systems taken out of service.