5 Noises You Don’t Want to Hear From Your Cedar Park, TX Furnace

While it’s normal for most mechanical devices to make some sort of noise while in operation, the sounds your furnace makes should be fairly unobtrusive. Since there are times when your furnace will likely become noisy, below are five noises you never want to hear from the furnace in your Cedar Park, TX, home.


Banging or popping noises are often a sign of a clogged filter, closed vents or undersize ducts. The resulting noise you hear is the sheet metal siding bending inward when your furnace starts up or shuts down.


Grinding or scraping noises indicate that the bearings within the furnace’s blower motor need attention. To maintain proper functioning, the bearings need regular lubrication, which is one reason why your furnace needs yearly maintenance.

Rumbling From Your Furnace

If you can hear a loud rumble throughout your home whenever your furnace completes a cycle, that’s a cause for concern. This means that even though the burners are off, fuel continues to burn in the combustion chamber, increasing the risk of carbon dioxide poisoning.


If your heating system squeals, it could indicate any number of issues. It may have a loose fan belt, a lack of lubrication on the blower motor or a more serious issue that requires the attention of a professional.


A whistling noise indicates that there’s something interfering with airflow in your furnace, such as a blockage. This usually means a clogged air filter, closed vents, something in the ductwork or something more serious.

Even if your furnace isn’t making any noise yet, it still a good idea to have a knowledgeable professional take a look at it. Parts dry out, dust builds up and wear and tear lead to costly repairs. Contact Del’s Heating & Air Conditioning today to learn how our maintenance plan can keep your system at its best and keep your home comfortable.

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