Hearing weird noises when your air conditioner is working? There's likely something wrong with your unit. If you ignore it, it could lead to significant—and expensive—troubles eventually. We're going to help you understand what’s going on with your air conditioner and what you can do to correct it.
8 Common Air Conditioning Noises
- Gurgling - Gurgling normally indicates a problem with your refrigerant line. If you can't pinpoint where the noise is originating from, that's alright. An expert can help verify where this noise is occurring. You can learn more information on our gurgling noises guide.
- Crackling - Crackling could come from debris in the unit or aging ductwork. Debris in the outdoor unit will cause a noise outside your house. Aging ductwork can cause noise inside your house. Check out our crackling noise guide for more information.
- Hissing - Hissing can be created by a faulty refrigerant line, an internal valve leak or the compressor. Look through our hissing noise guide for more information.
- Buzzing - Buzzing is likely an electrical issue. Check out our buzzing noise guide for further information.
- Clicking - Clicking can mean you have a loose part or that the fan is misaligned. You can find more information in our clicking noise guide.
- Pulsating - Pulsating can be caused by a loose part. Check out our pulsating noise guide for more information.
- Loud Noise - A noticeable noise from your outside unit can mean an issue with your compressor, damper, fan or air handler. Check out our loud noise guide for additional information.
- Humming - Humming can begin with fan motor issues or a broken relay switch. Head to our humming noise guide for more information.
You can find more information about frequent air conditioning troubles on energy.gov
Should I keep operating my air conditioner when it’s making a noise?
There are a few 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 examining your system.
Most of the time, we recommend shutting off the unit off and contacting a professional.
When should I do something about the noise?
We recommend calling a professional as soon as you recognize there's a problem with your unit. While AC repairs can be stressful and an unexpected spend, it's better to get problems fixed 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 fill out the form below for a free, in-home consultation.