Why Is My Air Conditioner Making A Noise?

Hearing odd noises when your air conditioner is on? There’s probably something wrong with your system. If you ignore it, it could lead to extensive—and expensive—problems eventually. We’re going to help you figure out what’s occurring with your air conditioner and what you can do to correct it. 

8 Common Air Conditioning Noises 

  • Gurgling – Gurgling generally indicates a complication with your refrigerant line. If you can’t identify where the noise is emanating from, that’s alright. A technician can help verify where this noise is occurring.
  • Crackling – Crackling could result from debris in the unit or aging ductwork. Debris in the outdoor unit will create a noise outside your house. Aging ductwork can create noise inside your house.
  • Hissing – Hissing sounds coming from your AC can be created by a damanged refrigerant line, an internal valve leak or the compressor.
  • Buzzing – Buzzing is no doubt an electrical issue.
  • Clicking – Clicking can mean you have a loose part or that the fan is misaligned.
  • Pulsating – Pulsating can come from a loose part.
  • Loud Noise – A clear noise from your external unit can mean an issue with your compressor, damper, fan or air handler.
  • Humming – Humming can arise from fan motor issues or a broken relay switch. Check out our humming noise guide for more information. 

You can find further information about common air conditioning problems on energy.gov 

Should I keep using my AC when it’s making a noise? 

There are limited cases where you can continue to run your AC, but you do so at your own risk. It’s hard to answer this question without inspecting your system. 

Most of the time, we recommend shutting down the unit off and bringing in a professional. 

When should I do something about the noise? 

We recommend calling a professional as soon as you recognize there’s an issue with your unit. While AC repairs can be stressful and an unexpected spend, it’s better to get problems corrected right away. Contacting a professional could help minimize future expenses and keep your system running longer. 

Not sure if your air conditioner is making any of these noises? Please schedule online for a free, in-home consultation. 

Savings For You

See All Offers Here >
Offer

$50 OFF ANY REPAIR

  • Save $50 on a Paid Service
  • Written 100% Satisfaction Guarantee
  • Plus, ask how to save an additional 15% and waive your trip charge!
print
Offer

MAKE NO PAYMENTS FOR 30 DAYS!

  • Upgrade to Worry-Free Comfort with the Advantage Program and make NO payments for 30 days!
print

© 2024 Service Experts, Service Experts Heating & Air Conditioning, and the Service Experts logo and design are registered trademarks of Service Experts LLC and used under license by SE Canada Inc. All Rights Reserved. *Not applicable to the Advantage Program. See your signed Advantage Program Agreement for full details and exclusions. 100% Satisfaction Guarantee is subject to certain restrictions and limitations as set forth in the applicable Terms and Conditions.

Chat with a Service Experts Professional