Hearing odd noises when your air conditioner is running? There's probably something wrong with your system. If you don’t fix it, it could lead to extensive—and expensive—problems eventually. 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 generally indicates a problem 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 come from debris in the unit or aging ductwork. Debris in the outdoor unit will generate a noise outside your house. Aging ductwork can produce noise inside your house. Check out 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 info.
- Buzzing - Buzzing is likely an electrical issue. See our buzzing noise guide for more information.
- Clicking - Clicking can indicate you have a loose part or that the fan is misaligned. You can find more information in our clicking noise guide.
- Pulsating - Pulsating can come from a loose part. Go through our pulsating noise guide for more information.
- Loud Noise - A loud noise from your outdoor unit can mean an issue with your compressor, damper, fan or air handler. Look at our loud noise guide for more information.
- Humming - Humming can begin with fan motor issues or a damaged relay switch. Head to our humming noise guide for more information.
You can find further information about frequent air conditioning issues on energy.gov
Should I keep operating 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 almost impossible to answer this question without looking at your system.
Most of the time, we recommend shutting off 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 think 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.