Why do I Have a Noisy Furnace?

It seems like there is an infinite amount of issues that both gas and electric furnaces can encounter. But out of all of them, odd noises might be the worst. They’re annoying, irritatingly consistent, and usually, lead to making a repair call you did not plan on making!

You never have to put up with a noisy furnace in your Huntsville home with Bunn’s and Bennett Heating and Air. Trusted by the Tennessee Valley area for over 35 years, we are ready to help you figure out what those noises mean and what you can do about them.

Why Is My Furnace Making Strange Noises?

Furnaces can make a variety of sounds, some of which can be hard to explain. We’ve heard many sounds, and have narrowed it down to about six general noises. Because each and every noise can be traced to particular parts and systems in the furnace, it is easier for a homeowner to identify the trouble area. 

  • Squealing noises – The belts on your furnace blower motor need to be replaced every so often. If not, they’ll start to wear down over time and begin producing a loud or persistent whining or squealing noise.
  • Rattling – Rattling noises or the sound of metal vibrating will typically point to something that’s just come a bit loose. You might be able to spot a screw coming loose in your ducts or on the blower compartment. Overall, this one’s an easy fix, and one you can do on your own. It may be hard to find the source of the noise.

Loud whistling – A whistling sound usually happens when airflow is restricted. The sound is made by your furnace attempting to draw air and move it where it can’t, which forces air through any gaps or holes. We suggest starting by replacing your air filter, but if that doesn’t fix the issue, you’re going to need a professional furnace repair.

  • Grinding or metal on metal – Grinding sounds are pretty scary. These sounds frequently happen when components in the system are either broken or very loose. This one qualifies as an emergency because it can lead to a breakdown and furnace replacement if left unchecked! So don’t hesitate to call us at Bunn’s and Bennett so we can schedule a visit to your home.
  • Buzz or humming sounds – If you hear buzzing or humming you’ll want to try to carefully follow the sound to see if you can find the origin. We’d bet you’ll wind up at an electrical connection. It’s very important that you do not interact with faulty electrical connections! This can cause a disaster if handled improperly. Just call us at 256-536-0967.
  • Banging or loud pops from ducts – This sound often comes from your ducts, particularly when the system kicks on or off. This is just normal expansion and contraction causing the metal ducts to make noises as they move.

Do you feel like the noises you’re hearing are abnormal? If so, you can trust Bunn’s and Bennett Heating and Air Conditioning to help you with all of your furnace troubles! Visit our website at www.bunnshvac.com or call us at 256-536-0967!

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