Is It Normal for My Furnace to Make a Lot of Noise?

When the furnace turns on in your home during a winter day, what sort of noise does it make? There’s no such thing as a furnace that will run completely silently (although modern variable-speed furnaces can run very quietly), but if the sounds that your residential furnace makes can be described as “noisy,” then there’s probably a malfunction with it.

It’s a common misconception that “Noisy Is Normal” when it comes to a furnace, and we want to dispel this. Any kind of unusual or loud sound you hear from a furnace is a reason to contact professional HVAC technicians and arrange for repairs services.

Some furnace noises that are warning signs

Any type of loud mechanical noise from a furnace indicates issues, usually with the blower fan motor. Grinding and screeching sounds often warn that the motor has lost lubrication or its bearings are wearing down, and the motor may soon burn out. Clanging and slapping noises might mean a broken fan belt or other component that has fallen apart and it striking other parts of the furnace. Rattling sounds can come from an air handler that has come loose. Pay careful attention to clicking noises soon after the blower fan shuts off, as this may mean a cracked heat exchanger, which can turn into a health hazard.

Don’t make attempts to further analyze any of these warnings sounds, however. If they have you worried, call for professionals right away and let them find out the source of the trouble and determine how to fix it.

Maybe it’s time to replace the furnace

If you’re dealing with a furnace that’s making a general racket each time it turns on, the issue may be that the system is simply over the hill. If your furnace has served your household with warmth for 20 years or more, it’s due for a replacement: all those noises are telling you the system has worn down to the point that it may soon suffer from a permanent breakdown. Call for HVAC technicians to inspect the furnace and offer you advice on how to proceed.

You can rely on Comfort Central, Inc. for all your furnace services in Arden, NC. We have many years of experience service the heating needs of Western North Carolina.

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