Photograph of hot water heater in Virginia home

Your furnace makes a lot of strange noises. Some are normal, but some can indicate an issue that requires a repair or replacement. Here are a few common furnace noises and how to tell the difference.

If you hear a metal-hitting sound it’s either coming from a loose or broken blower wheel or a broken motor mount.

Vibrating sounds (or thumping) occurs from an unbalanced blower wheel.

If your furnace seems to be functioning properly, but you hear a constant humming noise, you most likely have a loud transformer. This can be related to a bad interior fan.

If the noise you hear is less like a soft hum and more like a high-pitched squeal, this may be due to a loose fan belt. Applying oil or tightening your blower belt should stop this noise from continuing.

The start-stop cycle of your furnace fan can make the metal sheet bend inward, which is why you hear a banging or popping sound. This may mean you have an undersized duct, closed vent, or a clogged filter.

Do you hear rattling or rumbling noises coming from your system? You may have debris or loose screws!

For more tips on or for other home improvement/comfort tricks, contact Blue Mountain Plumbing, Heating and Cooling. With us, your comfort is our number one priority. So if you need an experienced plumber in Harrisonburg, Waynesboro, and Staunton, choose Blue Mountain Plumbing, Heating and Cooling! Visit our website or Call (540) 942-2700 to schedule a service or repair.

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