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What’s that Noise from My Air Conditioner?

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Hearing strange noises from your air conditioner is never a good sign. But what do those noises mean? Different sounds coming from your AC can signify different problems, so in this post we’re going to talk about what to do based on what you hear!

Your AC Is Making Chirping Noises

Chirping noises coming from your air conditioner usually indicate either that the bearings are dry, the fan is rubbing against the coils or blower cage, or the belt needs to be replaced. Chirping is actually the least serious air conditioner noise, so if you hear it, let your system run and see if it quiets down or if the noises become less frequent.

If the noise gets louder or if turns into more of a squeal, turn off your unit and call Michael Bonsby Heating & Air Conditioning right away—you might have a much bigger problem.

Your AC Is Making Squealing Noises

Squealing noises indicate the same problems as chirping noises, but typically to a much more severe degree. They often signal that the fan is getting ready to burn out, so call Michael Bonsby Heating & Air Conditioning to correct the issue before it causes your whole system to break down!

Your AC Is Making Growling Noises

Growling noises are not a good sign—they often mean your compressor is dying. Turn it off and call Michael Bonsby right away so we can tell you if it can be fixed or if you’ll need air conditioner replacement.

Your AC Is Making Rattling Noises

Rattling noises can be caused by a number of things, including:

  • A loose fan or worn out motor
  • A fan that’s off balance, usually caused by a bent fan blade
  • A loose belt
  • A loose panel or a panel that hasn’t been properly replaced
  • Old age

A little rattling is usually ok, but if it gets louder or it sounds like something is really off, call our technicians.

Your AC Is Making Knocking Noises

Like rattling noises, knocking noises can signify a couple things wrong with your system. The most common include:

  • A broken or worn out compressor
  • Improper refrigerant pressures
  • A stuck valve somewhere in your refrigerant system
  • A loose compressor

If you’re not sure what’s going on, call the pros at Michael Bonsby Heating & Air Conditioning for help!

The expert Gaithersburg HVAC technicians at Michael Bonsby Heating & Air Conditioning can diagnose and repair just about any air conditioner problem you may have. So if you’re hearing strange noises coming from your system, don’t hesitate to call us! We offer air conditioner repair and air conditioner replacement services and provide free estimates on all repairs.

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