Hearing odd noises when your air conditioner is on? There's probably something wrong with your unit. If you don’t fix it, it could lead to extensive—and expensive—problems down the road. We're going to help you understand what’s happening with your air conditioner and what you can do to change it.
8 Common Air Conditioning Noises
- Gurgling - Gurgling usually indicates a complication with your refrigerant line. If you can't identify where the noise is coming from, that's alright. A technician can help find out 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 generate a noise outside your house. Old ductwork can cause 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 information.
- Buzzing - Buzzing is no doubt 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 come from a loose part. Take a look at our pulsating noise guide for more information.
- Loud Noise - A clear noise from your external unit can mean an issue with your compressor, damper, fan or air handler. Look at our loud noise guide for additional information.
- Humming - Humming can be related to fan motor issues or a damaged relay switch. Read through our humming noise guide for more information.
You can find further information about common air conditioning troubles on energy.gov
Should I keep running my system 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.
Usually, 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 think there's an issue with your air conditioner. While AC repairs can be stressful and an unexpected expense, it's smart to get problems fixed right away. Getting 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.