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Peak Heating and Cooling Blog

If You Hear These AC Sounds, It’s Time to Call a Pro 

You never plan for an AC repair. As long as your unit is running, you probably don’t give it a second thought. And your AC never stops working when it’s convenient – not that it’s ever convenient. But sometimes your AC does signal that something is wrong by making unusual sounds. 

If your AC is making noises that are increasingly distracting, it may be time for air conditioning repair in Grand Rapids. Our team can help. But first, you need to know what sounds mean that something is wrong with your AC. Highlighted below are the five most common AC noises that indicate something is wrong. 

Hissing Sounds

When your AC unit pushes air through the ductwork and out the vent you will hear a blowing sound. Blowing should sound distinctly different than hissing. If you hear hissing sounds, there may be a variety of things wrong. A dirty air filter or dirty air vents can lead to hissing. Alternately, hissing may indicate a refrigerant leak. An AC expert can determine the root cause of hissing and fix the problem before it leads to more damage to your unit. 

Bubbling Sounds

Do you hear a bubbling sound coming from your AC? If so, that’s likely a sign that you have a leak in your refrigerant line. Don’t confuse bubbling with water running. It’s normal to hear water running as condensation is removed from your AC unit. But bubbling is never normal. If your refrigerant line leaks in a place where the refrigerant solution is in liquid form, you’ll hear bubbling. If the leak occurs in an area where the refrigerant is gas, you’ll hear a hissing sound as indicated above.

Squealing and Screeching

These sounds will be obvious because they are loud and high pitched. Your AC should never make these sounds during normal use. If you hear squealing or screeching, it’s definitely time to get an AC checkup. A motor belt may need lubrication or a fan blade may be loose a scraping as the fan blows. Either way, you want to address the sound and its cause before it causes additional damage to your unit.

Rattling Sound 

Rattling is normal in one scenario. That’s if the metal portion of your ductwork inside the AC cabinet expands or contracts with temperature changes. That rattling should happen very infrequently and you should be able to identify exactly where that rattling is coming from. Other rattling can indicate that your metal ductwork is loose or that parts in your AC system are loose. A technician can check the source of rattling and fix loose parts or ductwork. 

Clanging Sounds 

This sound occurs when something is no longer loose and broke off completely. Clanging can indicate that a part is knocking around your unit, potentially loosening other parts or damaging areas of your AC. It’s important to turn off your unit to prevent additional damage and call a professional to fix or replace the part. 

Contact Peak Heating and Cooling to schedule an appointment with our professionals for your home services. We do things the right way, not the easy way.

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