Heating and Air Conditioning: Application and ID

A/C refrigerant system, identification


NOTE: Before carrying out any work on the A/C refrigerant system, refer to A/C system safety measures.

A/C refrigerant system is charged with refrigerant R-134a.

A label specifying refrigerant type may be located on the compressor or radiator support.







A/C refrigerant circuit with expansion valve and receiver drier
1 - Evaporator
2 - Expansion valve
3 - High pressure service valve
4 - Sight glass (if equipped)
5 - Receiver drier
6 - Condenser
7 - Compressor


NOTE: Arrows indicate direction of refrigerant flow.