Why Is My Air Conditioner Making A Noise?

Hearing odd noises when your air conditioner is working? There’s a strong probability there’s something wrong with your system. If you ignore it, it could lead to major—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 change it. 

8 Common Air Conditioning Noises 

• Gurgling – Gurgling normally indicates a problem with your refrigerant line. If you can’t identify where the noise is originating from, that’s alright. An expert can help find out where this noise is occurring.
• 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. Mature ductwork can cause noise inside your house.
• Hissing – Hissing can be caused by a damanged refrigerant line, an internal valve leak or the compressor.
• Buzzing – Buzzing is likely an electrical issue.
• Clicking – Clicking can indicate you have a loose part or that the fan is misaligned.
• Pulsating – Pulsating can be due to a loose part.
• Loud Noise – A loud noise from your outdoor unit can indicate an issue with your compressor, damper, fan or air handler.
• Humming – Humming can be related to fan motor issues or a broken relay switch. Head to our humming noise guide for more information. 

You can find more information about prevalent air conditioning troubles 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. 

Usually, we recommend shutting down 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 something wrong with your system. While AC repairs can be stressful and an unexpected spend, it’s smart to get problems taken care of right away. Getting a professional could help reduce future expenses and keep your system running longer. 

Not sure if your air conditioner is making any of these noises? Please schedule online for a free, in-home consultation.