Goettl Technician replacing duct filter

My Furnace Started Rattling: What Does That Mean?

If our furnaces could speak, we would have a much easier time knowing when to repair them and what sort of repairs to schedule. “Hey, psssst! My fan belt is cracked! Get it replaced.” “You, over here! Did you know my pilot light is failing because of low gas flow? Get somebody on that!” However, our furnaces can’t speak to us… at least not in words. They can, however, speak to us through noises. When you hear an unusual sound coming from your furnace’s cabinet or its ducts, it usually means it has a repair issue that needs attention. In this post, we’ll talk about one of the more common furnace warning noises: rattling.

For furnace repair that will resolve your rattling furnace, call Goettl Air Conditioning and Plumbing any time of the day or night.

Possible reasons for the rattling

  • Loose parts: The rattling could be caused by loose parts inside the furnace. This could be anything from a loose blower wheel to a loose motor mount. In this case, the rattling would likely be accompanied by a general clanging or banging noise.
  • Clogged burners: If the rattling is coming from the burner compartment, it could be due to clogged burners. This can cause the burners to vibrate and make a rattling noise.
  • Dirty air filter: A dirty air filter can cause the furnace to work harder than it needs to, which can lead to vibrations and rattling. If you haven’t changed your air filter recently, try replacing it and see if that helps.
  • Ductwork issues: Sometimes, the rattling noise you hear is actually coming from the ductwork, not the furnace itself. This could be caused by loose ducts or ducts that are rubbing against each other.
  • Mechanical issues: Finally, it’s possible that the rattling is a sign of more serious mechanical issues with your furnace, such as a damaged blower motor or a faulty fan belt. If you suspect this may be the case, it’s best to call a professional HVAC technician to inspect and repair the furnace.

Do not try this at home!

It’s important for your safety, as well as the well-being of your furnace, that you leave any repairs that require opening your furnace’s cabinet to licensed professionals. This is especially true for natural gas-powered furnaces, which present the risk of exposure to toxic and combustible gas. Electric furnaces require caution as well because of the hazard of high-voltage shocks.

Goettl Air Conditioning and Plumbing has worked on furnaces since 1939—we’ve seen every type of furnace, and every type of repair. Let us handle your furnace repair.


What Our Customers Say About Us

Arthur FortesArthur Fortes
17:47 06 Dec 23
Michael was great and explained everything clearly!!
Lawrence PeteLawrence Pete
17:38 06 Dec 23
Very thorough performing service give customers more options to decide...no pressure he worked on the HVAC system
B SimonB Simon
17:11 06 Dec 23
Ralph. Came out on time. Very professional, knowledgeable. Did excellent work
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Friendly fast service. Matthew was very pleasant, did a systems check and showed and explained everything that was needed with suggestions and prices.
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Ralph did an excellent job! Thank you for the wonderful service!
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The work was very professional & neat , I was very surprised about the quality of workmanship. The crew was very knowledgeable & very respectful while working. I would recommend Goettl plumbing to anyone with the great job they have done….
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22:54 03 Dec 23
Did a great job servicing are unit. Answered all our questions.
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01:32 03 Dec 23
I was very pleased with Goettl Plumbing/AC company . Joseph came out and was excellent at explaining the issues that were going on with our pipes & then did a great job fixing the issues. Thanks, Goettl!
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was very helpful and professional 👏
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16:55 28 Nov 23
Tyler Leija was very thorough and explained everything carefully about our plumbing issues. I’m glad we called Goettl.. Thank You!
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15:32 28 Nov 23
William and Peter were amazing! Although Peter is in training, you would not have known if he didn't tell you. Services provided were top notch! Thank you!!!
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22:25 25 Nov 23
Frank M is fabulous! Great service!Sam is wonderful. I would like them to send him every time. Great service. On time. Expert knowledge. Highly recommend!
Scott MillerScott Miller
00:41 25 Nov 23
Great job and fast response. Tyler did a great job.
J NevilJ Nevil
00:34 25 Nov 23
Roger came out on Thanksgiving Day to fix our unit. Turns out, our home builder completely shorted us on the amount of blown-in attic insulation (which you think a home inspector would have caught) and also our unit is too small for our house which is 4 years old. Roger took the time to explain all of this to us in detail and got our unit up and running. Thank you Roger!
Rosalyn DouglasRosalyn Douglas
22:37 24 Nov 23
Michael was very professional and polite. Got the job done in a timely manner installing the sensors.
Michael SchmidtMichael Schmidt
22:10 24 Nov 23
Joseph was professional, friendly, and very thorough. He answered all of our questions and gave us a detailed explanation of what the problem was and why it occurs.
Joel RuizJoel Ruiz
16:02 20 Nov 23
Ralph did a great job, was on time and explained everything very clearly.
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