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Air Conditioning Repair Service

To speak with an Air Conditioner Expert call 972-468-0430. (Available 24-7)

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During the hot summer months you depend on your air conditioning to do its job by cooling off the inside of your vehicle. The compressor is the key to the proper functioning of that system which is at the heart of the A/C system. The compressor may develop a problem and may sometimes be easily fixed. It’s important to know the types of problems that may occur.


The A/C compressor is typically a refrigerant pump (piston-driven) which is bolted to the front of the engine. The compressor is usually driven by a belt from the engine crankshaft pulley. When an electrical current flows through a coil at the compressor this engages a magnetic clutch which turns on and off the A/C compressor.


An auto A/C compressor is necessary for providing the internal pressure of the A/C system. This allows the refrigerant to cycle through the (high pressure side) know as the condenser on its way to the (low pressure side) know as the evaporator and back again.


Failure of your A/C compressor usually is the result of one of the following problems: Complete seizure, abnormal noises, refrigerant leakage or pressure problems. These problems most of the time will require replacement of the compressor, but if a leak is determined to be coming from the compressor shaft seal, sometimes the seal can be replaced without the compressor being removed. The compressor clutch could be another problem area. The compressor clutch can be checked by checking the clutch magnet for voltage. Although this is not exactly a compressor problem, but sometimes a faulty pressure or temperature cycling switch may cause the compressor not to operate.


Sometimes a faulty auto A/C compressor (while it is rare) can be removed by a technician and overhauled. However, this requires specialized experience and knowledge, and most of the time, replacing the compressor with a new or used one is easier. Also make sure the problem is diagnosed correctly since a faulty cycling switch can produce symptoms similar to a bad compressor.


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