Hearing odd noises when your air conditioner is on? There's probably something wrong with your unit. If you ignore it, it could lead to extensive—and expensive—issues eventually. We're going to help you find out what’s going on with your air conditioner and what you can do to correct it.
8 Common Air Conditioning Noises
- Gurgling - Gurgling usually indicates a complication with your refrigerant line. If you can't determine where the noise is originating from, that's alright. A technician can help verify 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. Aging ductwork can create noise inside your house. Read our crackling noise guide for more information.
- Hissing - Hissing can be created by a damanged refrigerant line, an internal valve leak or the compressor. Check out our hissing noise guide for more on that.
- Buzzing - Buzzing is likely an electrical issue. Read our buzzing noise guide for more 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. Take a look at our pulsating noise guide for more information.
- Loud Noise - A clear noise from your outdoor unit can indicate an issue with your compressor, damper, fan or air handler. Look at our loud noise guide for additional 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 running my system 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.
Usually, 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 system. While AC repairs can be stressful and an unexpected cost, it's better to get problems fixed right away. Contacting 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.