An air conditioning compressor, usually driven by a serpentine accessory belt, sometimes squeals or squeaks before it breaks, but it can also stop working without any audible warning signs. In addition, a compressor can leak refrigerant, which will mean less cool air or none at all. A qualified mechanic is the best source for diagnosing if a compressor isn’t working, as A/C problems can also be caused by refrigerant leaks elsewhere in the system, by a slipping accessory belt or by corrosion in the A/C evaporator. If there is a leak, adding refrigerant won’t solve the problem.
How Do I know It’s Time to Replace My A/C Compressor?
