Hearing weird noises when your air conditioner is working? There's likely something wrong with your AC. If you don’t pay attention to it, it could lead to significant—and expensive—troubles later. We're going to help you figure out what’s going on with your air conditioner and what you can do to fix it.
8 Common Air Conditioning Noises
- Gurgling - Gurgling normally indicates an issue with your refrigerant line. If you can't determine where the noise is originating from, that's alright. A technician can help determine where this noise is occurring. You can learn more information on our gurgling noises guide.
- Crackling - Crackling could be due to debris in the unit or aging ductwork. Debris in the outdoor unit will cause a noise outside your house. Old ductwork can create noise inside your house. Read our crackling noise guide for more information.
- Hissing - Hissing can be created by a leaky refrigerant line, an internal valve leak or the compressor. Check out our hissing noise guide for more information.
- Buzzing - Buzzing is probably 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 check out more information in our clicking noise guide.
- Pulsating - Pulsating can be due to a loose part. Go through our pulsating noise guide for more information.
- Loud Noise - A loud noise from your outside unit can mean an issue with your compressor, damper, fan or air handler. Read our loud noise guide for more information.
- Humming - Humming can be related to fan motor issues or a damaged relay switch. Check out our humming noise guide for more information.
You can find further information about frequent air conditioning problems on energy.gov
Should I keep operating my AC when it’s making a noise?
There are some cases where you can continue to run your AC, but you do so at your own risk. It's almost impossible to answer this question without examining your system.
In most cases, we recommend turning the unit off and contacting a professional.
When should I do something about the noise?
We recommend calling a professional as soon as you suspect there's a problem with your unit. While AC repairs can be stressful and an unexpected spend, it's best to get problems corrected right away. Getting 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.