While running your central air conditioning unit, you may have noticed that the air coming out of your vents is not as cool as it should be. If so, the cause of the issue could be a failing compressor. If you suspect that the compressor may be causing the problem, look for the following signs that your AC unit's compressor is failing and needs repairs as soon as possible.

1.  Loud Bang Is Heard Every Time the Compressor Switches On

One sign for which you should keep an eye out is a loud bang that you may hear each time the compressor switches on. When you hear this sound, your compressor is having difficulty turning on, a problem referred to as hard starting.

When your air conditioner's compressor is hard starting, this issue could be caused by a couple of problems with the compressor. First, it may be having problem circulating refrigerant through the system, either because of a problem with the motor or a low level of refrigerant.

Second, there could be an electrical issue that is delaying the delivery of power to the compressor. When it does start, there is a surge of electricity that causes it to start harder than usual. Since hard starting is often a sign that the compressor is about to break, you should have a professional take a look at it right away.

2.  Circuit Breaker Trips When the AC Unit Runs

Another sign that there is a problem with the compressor inside your central AC unit is when it trips the circuit breaker every time the air conditioner runs. If this is happening, there is a serious problem with your compressor that you should not ignore.

If the compressor is tripping the circuit breaker, there is most likely an electrical issue somewhere, either in the part itself or the wires feeding it. Whenever the compressor kicks on and runs for a few minutes, it will start to overheat.

As a safety precaution in response to the surge in electricity, the breaker will trip and shut down the enter AC unit. If your compressor has reached the point where it is doing this, do not continue to run it, as there is an increased risk causing the electrical system of the AC unit to completely burn out.

If your AC unit's compressor is exhibiting the above signs, it is most likely on the verge of breaking down and should be inspected by a professional as soon as possible. For more information or to set up a service call, contact an HVAC contractor who offers AC system repair services.