A/C Compressor

It is driven by the accessory belt or, in electrified cars, by an electric motor. Most use a clutch or variable displacement. Electric compressors in hybrid and electric cars use special insulating oil, so the correct oil type is important during service.

Compressed refrigerant flows to the condenser and releases heat.

Noise or no cooling can mean compressor trouble or low refrigerant. Running the air conditioning regularly, even in winter, helps keep the seals lubricated.