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Comfy Heating & Air Conditioning Inc. Blog

Is Your AC Making These Strange Sounds?


Your air conditioner can get a little noisy from time to time, but how much of that is normal? Has there been a problem with an auditory signal that you just haven’t noticed?

Chances are that if you found this post, you noticed something abnormal coming from your AC. Let’s talk about different sounds that come from heating and air conditioning and what they mean.

Really Loud Banging Sound

Think about how much your air conditioner goes through on a day-to-day basis. There are so many moving parts, and sometimes they come loose, then bang around.

This may be relatively small at first, but as parts loosen, they can knock into other components and cause bigger problems. Don’t treat this issue as one that’s just going to go away on its own–it deserves a repair call.

Light Buzzing or Humming Noise

Buzzing noises are almost always attributed to electrical components. Anything ranging from your compressor failing to the condenser fan dying is in the range of possibility. If it requires electricity, don’t rule it out.

It should go without saying, but if you hear a buzzing or humming sound, don’t try to fix the issue on your own. HVAC technicians have the necessary tools and know-how to tackle electrical problems.

Don’t risk any unnecessary exposure to electrical wiring; it’s a matter of personal safety. If you suspect electrical problems, that warrants an emergency call to your HVAC technician.

Clicking or Distant Clapping Sound

When your thermostat sends a signal to your air conditioner, you may hear a clicking sound. That’s common and nothing to worry about. The issue is when that clicking sound doesn’t stop.

This is another signal of electrical problems. If the clicking clearly isn’t coming from the thermostat, it could be a capacitor problem.

Your HVAC technician will be able to determine the source and find the best solution as quickly as possible.

High-Pitched Whine or Screeching Noise

This is one you should be immediately concerned about. When two pieces of metal need to press against each other, there’s lubrication involved. Without it, you get a screeching sound.

That’s an indicator that metal components are grinding against each other which can interfere with the other components of your AC.

It’s the sound that happens before something breaks. If you hear this noise, turn off your air conditioner and make a repair call. Stopping this as soon as you hear it is important. Otherwise, you risk a complete air conditioner breakdown in the near future.

No Abnormal Noises

If you notice any of these sounds, it’s best to call for repair as soon as possible so you don’t run into major breakdowns in the near future. This is your AC firing a warning shot: let’s listen to it.

Fixing a problem with your air conditioner can prevent components from breaking entirely, which will save you a lot of money in the long run. Be aware and alert of your air conditioner’s odd sounds.

Contact Comfy Heating & Air Conditioning Inc. today to schedule air conditioner repair and maintenance to get your home comfort back on track.

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