Why Is My Air Conditioner Making a Weird Noise?

Posted on: July 13, 2016

Weird Sounds Your Air Conditioner Makes & What They Mean

When the summer heat descends upon North Carolina, all our neighbors in Raleigh and Durham want to do is relax in a cool, air conditioned home. But what happens when the source of their relief, their air conditioner, starts making weird noises? That’s not so relaxing!

It’s not uncommon for air conditioners to make a variety of strange sounds. What’s important is the type of sounds that your air conditioner is making, since each sound can indicate a different issue.

To learn more about why your AC is making that weird sound (and how to make it stop), read on. Or, to schedule immediate air conditioner repair services, call us at 919-480-2727 or contact us online today!

Why Your Air Conditioner Is Making a Squealing Sound

If your unit is making a high pitched squealing noise, the issue is usually either the belt connecting the motor to the blower has slipped or the bearings on your condenser fan’s motor.

Most newer air conditioners don’t use a belt system, so if your unit is older, that is likely the problem. If this is the case, you’ll hear the sound both inside of your home and outside of your home. If this issue sounds like what you’re experiencing, the belt will need to be replaced.

If you have a newer unit, it’s more likely that the issue is the bearings on your condenser fan’s motor. Newer units utilize direct-drive motors without belts, which pull air across the condenser coils in your compressor. If this is the case for your air conditioner, you may hear squealing or grinding from your outdoor unit, which indicates that the motor needs to be replaced.

With both of the issues outlined above, we would advise you to call a professional to repair your air conditioner. Give our team at Air Experts a call today at 919-480-2727 and we’ll fix your system right away.

Why Your Air Conditioner Is Making a Buzzing Sound

If you hear loud buzzing noises coming from your air conditioner, it’s very likely that it is malfunctioning. Typically, the issue is either loose parts, missing or broken isolation feet, refrigerant leaks, or a malfunctioning compressor.

All of the parts of your air conditioner work together to keep your home cool in warm temperatures. So, if one part comes loose, it puts extra stress on the other parts. After extra wear puts enough stress on those parts, your unit can start making a buzzing sound that indicates a need for repair.

Your unit’s compressor sits on small rubber feet called “isolation feet” at the base of the air conditioner. After you’ve been using your air conditioning for a while, those feet can disintegrate or crack, which makes the compressor lose balance and start to make a buzzing noise when in use.

As they’re being used to cool your home, air conditioning units can actually freeze up—this may sound counter-intuitive, but it’s true! Your AC can become frozen if refrigerant begins to leak from the unit, which often begins emitting a buzzing sound as a result.

Finally, the issue at hand could be a malfunctioning compressor, which is the part of the unit that pressurizes and cools down the refrigerant that then cools your home. A buzzing noise may mean that your compressor isn’t working correctly or that the electrical voltage of your unit is not right.

For any of the issues listed above, it’s best to call a professional to resolve the problem rather than put yourself at risk. Our team of professional heating and cooling specialists at Air Experts can fix your AC right away—just give us a call at 919-480-2727 or contact us online today!

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