Auto Repair Encyclopedia
Air Conditioning Compressor Replacement
Sometimes referred to as AC Compressor, Air Conditioning Compressor, AC Compressor Replacement
An engine-driven fan belt powers the air conditioning compressor, which is mounted on the engine.
To replace the air conditioning compressor, the air conditioning system refrigerant is flushed and the high pressure lines to the compressor are removed. The compressor is detached from the engine and replaced with the new compressor. Compressor lubricant and the refrigerant are replaced.
The AC system should be operated at least once a month to circulate the refrigerant—even during the winter. The AC system operates at very high pressures. Special tools and knowledge are needed to work on it; this work must be carried out by competent, trained technicians.
About this Repair: AC Compressor Replacement
What to watch out for
"Stop leak" compounds are not recommended, as they are a temporary solution and can damage A/C components, resulting in expensive repairs.
Recommendations
We recommend replacing the A/C Drier when the AC Compressor is replaced. The A/C Drier acts as a moisture and debris filter for the A/C system, and a new part will keep the repaired system clean. This will add additional parts and labor cost to the estimate.
Why this happens
AC Compressors may require replacement if they are found to be leaking oil and/or refrigerant.
Failing A/C Compressors that make unusually loud noises while operating should be addressed before they cause damage to other parts in the AC system.
Any restrictions in the A/C system will need to be identified and repaired, or a recurring problem with the A/C Compressor is likely.
