What's That Noise? Understanding Air Conditioning Sounds And What to Do About Them

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What's That Noise? Understanding Air Conditioning Sounds And What to Do About Them

87% of U.S. homeowners have some form of air conditioning in their homes. There’s nothing better than relaxing in an air-conditioned home, especially during the summer when it’s hot outside.

Odd noises are one of the first signs of an air conditioning failure. But your air conditioning unit can make several different noises. Which ones signal a problem?

Don’t worry! A professional air conditioning maintenance and repair technician can help. Before calling in a pro, take a look at these common AC sounds to identify the one your unit is making.

Read this guide to understand air conditioning sounds and how a professional can help.

Buzzing Sound

It’s common for your AC unit to make a low buzzing sound; it should always sound like a hum.

What if the buzzing becomes extremely loud? This is a sign your unit is malfunctioning. Your AC unit can make a buzzing sound for one of these reasons:

  • Missing or broken isolation feet
  • Loose parts
  • Malfunctioning compressor
  • Refrigerant leak

Either way, a professional needs to come in and inspect the damage.

If these problems persist over time, they can impact your whole system negatively. These are all core components of the AC unit that all work together to ensure the AC system works.

Squealing Sound

A high-pitched squealing sound is even more alarming than a buzzing sound. This sound signals the slipping of the belt that connects the motor to the blower.

Keep in mind that newer AC systems don’t have a belt system. This problem is only common with older systems.

Clanking Noise

If you hear a loud clanking noise, this is likely a loose part. Also, the compressor may have come loose. A professional will have to come in and diagnose the system.

You’ll either need the system repaired, or you’ll have to replace any of the loose parts.

A clanking noise can also signal a less severe problem. For example, the outdoor fan or indoor blower can fall out of balance and start hitting the other parts.

Keep in mind, if you ignore these problems, your AC unit will only get worse.

Banging Noise

A banging noise coming from inside of the unit signals a loose or broken part.

This is commonly the piston pin, a connecting rod, or the crankshaft. Your indoor blower can also get out of balance and a banging noise can also signal a compressor replacement.

Either way, a professional needs to inspect the AC system.

Do You Hear Air Conditioning Sounds?

From banging noises to buzzing sounds, many air conditioning sounds indicate that you need a repair or a replacement. While some sounds are normal while others are the first indicator that there’s something wrong with your system.

It’s always best to have a trusted AC repair technician who can identify these noises and recommend the best course of action.

Is your air conditioner making weird noises? Are you based in Denver? Contact us today!

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