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While running your air conditioner, you may notice it making a persistent strange noise. Understanding these sounds and what they mean can help you avoid costly AC repairs in the near future. Check out the guide below to learn more about AC noises and what issues they come from. 

Common AC Noises That Indicate Unit Problems

1. Whistling Ducts

A problem exclusive to duct systems, whistling usually indicates improper sealing somewhere within the system. When air escapes through tiny openings that shouldn’t be there, it makes a whistling noise. The sound also means you’re losing cool air, making your unit less energy-efficient.

2. Ongoing Rattling

If your unit is making a continuous rattling or buzzing sound, it’s likely a loose screw. While this may seem minor, it can lead to bigger problems later on. If unchecked, it can compromise larger parts like the compressor or condenser and require serious AC repair. 

3. Repeated Banging

AC repairIf you’re hearing a banging sound that keeps repeating, a faulty fan blade could be the culprit. The blade, when loose, can hit other components inside the unit with each rotation. This not only puts the fan at risk, but it’s also dangerous for other internal parts and could lead to more serious air conditioning repair jobs.

4. Persistent Grinding

A grinding noise is a sign that you may need AC repair soon. A damaged compressor is the leading cause of grinding sounds. When the compressor wears down, the pistons may end up grinding against other components, producing the odd sound and compromising the functionality of the unit. 

5. Loud Screeching

Screeching and squealing noises are a direct sign that something is wrong with your unit. Squealing usually indicates a damaged or loose belt, and could lead to the AC motor failing. If you hear a loud screeching coming from your unit, turn the system off immediately and call for emergency AC repairs. 

 

If your unit isn’t working like it should, Advantage Air in Lexington, KY is your go-to source for AC repairs and service. With over 20 years of experience, they provide high-quality HVAC maintenance, repairs, troubleshooting, and installations. To schedule an appointment, call (859) 559-6409. To learn more about their services, visit their website,

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