The compressor is the heart of the entire AC system and a well-functioning compressor is crucial for optimal performance of the air conditioning system. Otherwise, less cold air is blown into the ...

An air-conditioning compressor, usually driven by a serpentine accessory belt, sometimes squeals or squeaks before it breaks, but it also can stop working without any audible warning signs.

Diagnosing a faulty compressor valve is something HVAC technicians have to deal with on a semi-regular basis, and while a bad valve is often not the main reason a compressor fails, it is an integral ...

How does a tech know the a/c compressor he or she is diagnosing is actually failed and that the problem is not a crankcase heater, condenser fan, or rubbed out wire?

A standard AC service for our sample vehicles ranged from $430 to $521, on average, but compressor replacements were significantly more expensive.