Why Is My Air Conditioner Making a Loud Noise?

Sure, it is normal for your air conditioner to make enough noise for you to notice that it’s running. However, there may be cause for concern if that noise can be classified as loud or even disruptive. What does it mean when your AC makes loud noises, and why is your air conditioner make a loud noise to begin with? Well, that depends on what those noises sound like.

Why Is My Air Conditioner Buzzing Loudly?

If your system is older, you might notice a buzzing sound that is most likely connected to an electrical issue. The source could be a faulty relay switch or condenser fan motor, an issue with your circuit breakers or electrical connections, or a frozen AC unit.

Why Is My Air Conditioner Squealing/Screeching?

A failing belt will certainly cause a squeal a or screech to come from your blower motor. Replacing the belt before it breaks is fairly inexpensive, but your blower will no longer turn if the belt does break. There is also a chance that your motor simply needs lubricant. An expert will be able to tell you which one is causing the problem.

Why Is My Air Conditioner Rattling, Thumping, Banging & Clanking?

Rattling or clanking are indications that you have a loose part in your AC system. Having this repaired before it completely detaches is important, because a loose part can cause significant damage to other areas of your unit. Loud banging or thumping may mean that the part has already broken off and is being thrown around your system.

There are some instances in which a rattling noise means that your air conditioner’s motor mounts have become loose or that the blower has become misaligned. You’ll need an HVAC technician to fix any of these issues.

Why Is My AC Unit Making a Loud Whacking or Thwapping Noise?

Remembering the sound a playing card would make when you attached it to your bicycle spoke? While it may have been fun to hear that noise as a kid, as an adult homeowner, that’s not something you want to hear from your AC unit. While not critical, it can mean that some kind of debris has gotten caught in your blower blades. You’ll want to clean it out to avoid wearing down your motor.

Wait! What If My AC Makes a Loud Rattling or Screaming Noise From the Outside Unit?

A rattling sound coming from your outside compressor is a sign of loose hardware or a failing motor. While a squeal when your unit kicks on is normal, if the noise sounds more like a scream (and it doesn’t stop), your compressor is likely failing.

Schedule an AC Service Call in Fenton, MO

If you’ve noticed one or more of these sounds coming from your air conditioner, the experts at Metro Heating & Cooling can help diagnose the problem. As part of our air conditioner service calls, we’ll come out, assess your unit, and inform you of your best options for repair. We offer up-front pricing, so you’ll never receive any surprise or hidden fees once the project is completed.

When you have issues with your home’s comfort, you want an HVAC company you can count on. Metro Heating & Cooling has been putting customers first for over 25 years by providing 100 percent honest assessments and up-front, fair pricing. Give us a call today!

We service Fenton, MO and the entire Greater St. Louis metropolitan area!

CALL 314-845-5900 | Schedule a Service Call Online