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!”

Sadly, our furnaces can’t speak to us… at least not in words. However, they can speak to us through noises.

When you hear an unusual sound coming from your furnace cabinet or ducts, it usually means there is a repair issue that needs attention. Read on to learn about a common furnace warning noise: rattling.

Goettl23 Furnace SP 023

Possible Reason for 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, such as a damaged blower motor or a faulty fan belt. If you suspect this may be the case, it’s best to call the professionals at Goettl to inspect and repair the furnace.

Do Not Try This at Home!

For your safety and the well-being of your furnace, we advise you to leave all furnace 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. Trust us to handle your furnace repair the right way, not the easy way.

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What Our Customers Say About Us

Gonzalo CastilloGonzalo Castillo
17:20 13 Jul 24
Peter is very experienced and professional. He knows a lot and explains everything in detail.
John McCarreyJohn McCarrey
13:56 13 Jul 24
Excellent service!
Gary StapletonGary Stapleton
02:37 13 Jul 24
I called Goettl to get a second opinion on a/c repair options or replacement. Peter Medelez conducted a very thorough system check and confirmed all the same issues previously identified but found an additional issue; tipping the scale to full replacement. We appreciated his professionalism and knowledge: answering all our questions and explaining the issues and options. We ultimately chose Goettl for the replacement option due to their price and professionalism.
James KroppJames Kropp
17:19 09 Jul 24
It was great
Robert WilliamsRobert Williams
17:06 09 Jul 24
Peter was great! Explained every detail I needed and answered all my questions!
Gustavo EscobarGustavo Escobar
16:57 09 Jul 24
Jesus Gloria provided exceptional service as the Goettl Technician this past weekend. He demonstrated great attention to detail in addressing the issues with our air conditioning unit and resolved them quickly, within 30 minutes. Jesus has a strong dedication to his profession and the company he represents, as evidenced by his professional demeanor and the quality of his work. His customer service skills are top-notch, earning a 5-star rating from us. We were so impressed by his service that we have decided to become members of the Goettl service.
Jesse Vann, JrJesse Vann, Jr
15:19 09 Jul 24
Jehad and Cameron provided great recommendation and customer service for my AC replacement.
Reda MoxleyReda Moxley
15:08 09 Jul 24
17:04 01 Jul 24
Got exactly what we needed with the service and had great customer service from Tyler for our plumbing and with Jehad for our AC work. They were awesome! Thanks!
Donna OwensDonna Owens
15:51 01 Jul 24
Rudy came out and was very professional and addressed our plumbing needs in a timely manner, highly recommended.
Neuro NerdNeuro Nerd
15:06 01 Jul 24
William and Cameron were knowledgeable, friendly, professional, respectful and put on plastic booties over their shoes when they came into the house. Our pets were comfortable with them and that says a lot. We will definitely ask for them again in the future if our AC has any issues.
Karen PardoKaren Pardo
14:55 01 Jul 24
Jehad did an amazing job after checking the entire unit he came down and thoroughly explained everything that needed to get done/replace.
Kelly MoserKelly Moser
17:01 27 Jun 24
Matthew was on time respectful and very curious. He explained everything I needed to know and I felt no pressure to buy additional things. Thank you Matt .
Dusengimana ErnestDusengimana Ernest
15:49 27 Jun 24
Jesus gloria did great. Wonderful
Nick LoprzNick Loprz
14:39 27 Jun 24
Charles JeterCharles Jeter
22:12 26 Jun 24
Kimberly FordKimberly Ford
21:34 26 Jun 24
EXCELLENT CUSTOMER SERVICE!! Jesus Gloria provided AC maintenance today providing with photos and video of his findings and a thorough explanation of any issues found. Richard Wenzlaff and Junior also came out today for the plumbing maintenance and also provided EXCELLENT CUSTOMER SERVICE. I have very clean water. They checked out my water heaters, water softener, osmosis, etc…no issues were noted! Three AWESOME, hard-working, thorough gentleman! Professional and courteous! Thanks guys! Appreciate your hard work and honesty!
Music by JuanMusic by Juan
17:47 19 Jun 24
Supreme service.
Erica RussellErica Russell
17:16 19 Jun 24
Awesome experience. Jesus Gloria was very friendly and informative and solved the problem quickly.
16:06 19 Jun 24
Josh was amazing! He was personable, polite, professional, and he walked me through everything he was doing and looking at. If I could give him ten stars I would!