It’s normal for a furnace to make noises while it’s operating. However, there are some noises that indicate there’s a problem with the system and require your attention. Find out what strange noises you may hear from your furnace, what they mean, and what you should do about them to keep your Benton home comfortable.


Grinding should stand out among the abnormal operating sounds of your furnace and can indicate a problem with the cage blower wheel. If this occurs, it can cause damage to your furnace. Be sure to turn it off and contact a professional HVAC technician as soon as possible.


A booming sound from your furnace can be alarming. It indicates a partial blockage in the burner assembly. A blockage can be caused by the accumulation of carbon particles that occur from the combustion of gas. If the particles aren’t removed, it makes this booming sound.


Squealing is another strange furnace noise you may hear. Generally, squealing means that the metal parts in your furnace aren’t properly lubricated and are rubbing against each other. This can be caused by unmaintained bearings or a worn-out belt, both of which can be corrected by a technician. This isn’t a serious issue, but it can cause damage and wear and tear to your furnace over time.


A thumping sound comes from an unbalanced blower wheel within your furnace. This sound is similar to the sound washers make when they’re unbalanced. It can also be caused by a misalignment of the motor. This is a serious issue that should be addressed immediately since it can cause significant and expensive damage to your furnace.

Call Thornton Heating & Air

If you’re hearing strange furnace noises in your home, it’s best to get the problem corrected as soon as possible to avoid serious damage or a breakdown. Fortunately, the experienced technicians at Thornton Heating & Air are ready to assist you. You can reach us at (270) 753-8181 or (270) 247-COOL.

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