Operation CHARM: Car repair manuals for everyone.

Heating and Air Conditioning: Tools and Equipment







Never mix HFC-134a (R-134a) refrigerant and/or its specified lubricant with CFC-12 (R-12) refrigerant and/or its lubricant.

Separate and non-interchangeable service equipment must be used for each type of refrigerant/lubricant. Refrigerant container fittings, service hose fittings, and service equipment fittings (equipment which handles refrigerant and/or lubricant) are different for CFC-12 (R-12) and HFC-134a (R-134a). This equipment difference is designed to prevent mixed use of the refrigerants/lubricants.

Adapters to convert from one size fitting to the other must never be used. Refrigerant/lubricant contamination will occur and compressor failure will result.




Refrigerant Identifier Equipment