Air Conditioning Unit Making Funny Noises When Running This Summer? 2 Possible Causes

If your air conditioning unit turns on and it starts making noises that you have never heard before, you have a problem. This can be caused by many things, so it will take a professional to determine why the air conditioner is not working properly. Before they arrive, below are two problems the contractor may find with the unit.

Air Conditioner Is Squealing

If you hear a squealing noise when your air conditioner is running and you have an older system, this can be caused by a belt slipping from the blower. If this is the case, replacing the belt will fix the problem.

If you have a newer air conditioning unit, a direct drive motor is used. This type of motor uses no belt system. The direct drive motor causes air to cross over the condenser coils in the compressor. If the air does not cross over the coils, you will hear a squealing type sound. Over time, this sound may turn into more of a grinding noise. In a case like this, the contractor will likely replace the motor. With a newer unit, you will hear this squealing or grinding sound coming from the outside unit when the air conditioner is running.

Air Conditioner Is Buzzing

If you hear a buzzing sound while the air conditioner is running, this can be due to many things. For example, this buzzing can be due to a problem with the compressor. The HVAC contractor can run a test on the compressor, and if a problem is found, they will likely replace the compressor.

This can also be due to loose parts inside the unit, which puts a lot of stress on all the parts. Once more parts become loose, it will make a buzzing sound. The HVAC contractor will determine the parts that are loose and tighten them back up again. One thing that can cause this to happen is the air conditioning unit becoming off-balance outside. This can be due to a problem with what the unit sits on outside. For example, if the unit sits on a concrete slab, the slab may be deteriorating. 

The HVAC contractor may find other problems with the unit that are causing these noises. The contractor can go over this with you in much more detail and can also provide maintenance for the unit when they finish repairing it. This will help prevent further problems from happening in the near future. For more information, contact local HVAC services like Service Tech, Inc.