Hearing odd noises when your air conditioner is on? There's probably something wrong with your system. If you don’t pay attention to it, it could lead to significant—and expensive—troubles later. We're going to help you find out what’s happening with your air conditioner and what you can do to fix it.
8 Common Air Conditioning Noises
- Gurgling - Gurgling normally indicates a complication with your refrigerant line. If you can't determine where the noise is coming from, that's alright. A technician can help find out where this noise is occurring. You can find more information on our gurgling noises guide.
- Crackling - Crackling could result from debris in the unit or aging ductwork. Debris in the outdoor unit will generate a noise outside your house. Mature ductwork can create noise inside your house. Read our crackling noise guide for more information.
- Hissing - Hissing can be created by a faulty refrigerant line, an internal valve leak or the compressor. Check out our hissing noise guide for more on that.
- Buzzing - Buzzing is probably an electrical issue. Check out our buzzing noise guide for further information.
- Clicking - Clicking can indicate 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 caused by a loose part. Take a look at our pulsating noise guide for more information.
- Loud Noise - A clear noise from your outdoor unit can mean an issue with your compressor, damper, fan or air handler. Look at our loud noise guide for supplementary information.
- Humming - Humming can begin with fan motor issues or a damaged relay switch. Check out our humming noise guide for more information.
You can find more information about prevalent air conditioning issues on energy.gov
Should I keep using my air conditioner 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 hard to answer this question without examining your system.
Most of the time, we recommend turning 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 air conditioner. While AC repairs can be stressful and an unexpected expense, it's best to get problems corrected right away. Calling a professional could help lower 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.