R-134a refers to a refrigerant commonly used in new automobile air-conditioning systems and in retrofitted automobile air-conditioning systems. R-134a replaced R-12 and other chlorofluorocarbon (CFC) refrigerants because of ozone layer damage.
Many automobiles that previously used R-12 refrigerant can be retrofitted with either an original equipment manufacturer (OEM) retrofit kit or with a least-cost retrofit. A least-cost retrofit involves removing the old refrigerant and installing new labels, fittings, refrigerant and lubricant. A least-cost retrofit generally costs less than an OEM kit, but it may also decrease air-conditioning performance.
Many automobile technicians believe R-134a represents a temporary replacement for R-12 and expect the development of a new refrigerant that does not require retrofitting. According to the EPA, however, "current research indicates that no such replacement refrigerant exists."
R-134a refrigerant is a clear, colorless vapor that has a faintly sweet odor. It has a molecular weight of 102. The chemical formula for R-134a is F3CCH2F.
Wear gloves and safety goggles when handling R-134a and work in a well-ventilated environment. Flush skin or eyes with water if contact occurs. If inhalation occurs, move to fresh air and seek medical attention.
