Why Your Furnace May Be Making These Noises

November 23, 2016

Now is when homeowners start turning on their furnaces to settle in for a long winter. Unfortunately, when some furnaces start up, especially if it hasn’t received a fall heating tune-up, there are some troubles that need to be inspected. A serious problem you may discover is your furnace making funny noises – check out these furnace noises you should never disregard.

Scraping Sound

If you hear a loud raking sound that sounds like metal on metal, there is probably something wrong with the blower wheel. If you hear a sound like this, power off your furnace immediately and call R & M Climate Control Service Experts Heating & Air Conditioning to inspect the equipment. There are a couple things that could be amiss with the blower wheel. First, it may just be loose and if the piece is not too harmed, can be tightened. Second, it could be that the blower wheel is broken and will require replacement. Or third, it may be that the motor mount itself broke, causing the whole blower assembly to rattle uncontrollably. One of our service experts would be happy to come over and take a look, and get you back to the noiseless and cozy home you have come to adore.

Loud Bang When Furnace Starts

If there is a loud pop when your furnace turns on, there are a couple things that could be happening. Two general issues are a dirty furnace burner or ignitor. Extending and contracting air ducts can also cause loud noises after the heating blower turns on. A dirty furnace burner or ignitor could prevent the burners from igniting, forcing gas to build up. When the gas finally does ignite, it will create the loud boom you hear. This could result in a safety issue, especially if one of the small explosions caused the heat exchanger to deteriorate. Not only could that cause a carbon monoxide leak, but you would also have to replace the heat exchanger, which may be very pricey.

The other issue, extending and contracting air ducts, is a usual noise complaint for people with metal ducts. If your furnace is making the loud bang and it is a result of your air ducts, it could be an indication of undersized ducts, blocked vents, or a clogged air filter. R & M Climate Control Service Experts Heating & Air Conditioning is happy to set up an appointment to diagnose your issue and get your home back in working order. Additionally, this will also provide improved comfort as well.

Whining Noise

If you hear a high-pitched disturbance, it could be the blower motor is malfunctioning, the shaft bearings are in need of oil, or an issue with the blower belt. A seasonal furnace tune-up will help discover these issues before they become major problems so make sure you call us at 865-229-6176 and we’ll make sure your heating equipment is ready to keep you safe and warm all winter long.

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