4 Types Of Noises That Could Mean Trouble For Your Air Conditioner


Today's air conditioners are designed to operate as quietly as possible. So when you hear unusual noises coming from your air conditioning system, chances are it's signaling a problem on the horizon. There are plenty of issues that can cause a typical air conditioner to make an unusual racket. If you hear any of the following noises, then you should contact your HVAC technician as soon as possible.

Squealing or Screaming

If your air conditioner's blower fan is belt-driven, then chances are it may develop a squealing or screaming noise if the belt comes loose or the belt itself becomes worn-out. In most cases, a simple adjustment or a complete replacement of the belt will solve this issue. You should also make sure the pulley is properly lubricated.

In some cases, the source of the schooling or screaming noise may be the blower fan motor itself. You should have your HVAC technician make sure the motor is properly lubricated to prevent friction and excess heat from damaging it further.

Hissing or Bubbling

That high-pitched hissing sound or bubbling noise coming from your air conditioner may be caused by a refrigerant leak. Refrigerant leaks usually happen due to a gasket failure or because one of the refrigerant lines has developed a pinhole leak.

Refrigerant leaks can be hard to track down with the naked eye, which is why some refrigerants include a specialized dye that's visible under ultraviolet light. Your HVAC technician can use this to track down the source of the leak and take further action to stop it.

Constant or Rapid Clicking

You may hear your air conditioner's relays clicking on and off as the unit cycles its compressor. If these noises become constant or rapid in nature, then you may want to have the issue checked by your HVAC technician. A bad relay, faulty thermostat, or an air conditioner compressor undergoing a short cycling event can cause these problems.

Thumping or Whacking

It's not unusual for the blower fan blades to become loose or warped enough to make contact with the air conditioner itself. This could lead to a constant thumping or whacking sound while the air conditioner is in operation. You should have your HVAC technician check the fan blades and make repairs as necessary. Your technician should also make sure the blower fan motor isn't out-of-balance, as this could also lead to unusual thumping noises during operation.

Call a company like Dalton Heating & Air Conditioning to schedule an inspection of your HVAC system if you're dealing with such noises.


17 July 2017

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