What’s Behind 5 Common Furnace Sounds in Glen Allen, VA?

January 22, 2025

Your furnace in Glen Allen, VA can make all sorts of noises. Some of them are normal, but some may indicate a problem. Here are some common sounds to listen for that mean it’s time to call the professionals for help.

1. Rattling

Most rattling noises emanating from your furnace indicate a loose part. This could be external or internal.

A rarer cause that’s more important to address quickly, though is that your heat exchanger has a crack in it. This can be dangerous and requires professional help to fix.

2. Squealing or Screeching

A damaged or worn-out belt can cause a screeching or squealing sound. This can also happen because of blower motor issues.

3. Whistling

Dirty air filters can cause a whistling sound. Be sure to check your filter monthly and change it as necessary or as indicated from the manufacturer.

4. Clicking

Clicking is normal when your furnace first comes on. But if you notice repetitive clicking, there may be an issue. Clicking can be caused by problems with the:

Ignition system
Control panel
Compressor
Fan motor

5. Grinding or Scraping

Grinding means worn-out parts. It’s most often the bearings. On the other hand, scraping can indicate problems with the blower wheel.

These can cause trouble if left unchecked. When you hear grinding or scraping, turn your furnace off, and call us right away to repair it.

You can expect your furnace to make some noises during regular operation. For example, humming or buzzing can be normal as long as it’s not loud or persistent. But if you hear any of the above sounds, make sure to call our heating professionals to come take a look.

By keeping an eye on your furnace, you can help stop additional damage from occurring. Call our team at Foster Plumbing & Heating today for heating system maintenance or repair in Glen Valley, VA.

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