Why Your Furnace May Be Making These Noises

November 23, 2016

Now is when people start turning on their heating systems to settle in for a cold winter. Unfortunately, when some heaters start up, especially if it hasn’t had a yearly heating tune-up, there are some troubles that need to be examined. A big problem you may discover is your furnace making unusual noises – check out these furnace noises you should never disregard.

Scraping Sound

If you hear a loud scraping sound that sounds like metal on metal, there is possibly something defective with the blower wheel. If you hear a sound like this, turn off your furnace immediately and call Rob's Albertan Service Experts to inspect the equipment. There are multiple things that could be wrong with the blower wheel. First, it could just be loose and if the piece is not too impaired, can be tightened. Second, it may be that the blower wheel is broken and in need of replacement. Or third, it may be that the motor mount itself broke, causing the complete blower assembly to rattle uncontrollably. One of our service professionals would be happy to come out and take a look, and get you back to the silent and cozy home you have come to expect.

Loud Bang When Furnace Starts

If there is a loud boom when your furnace turns on, there are a few things that could be going on. Two general things are a dirty furnace burner or ignitor. Expanding and contracting air ducts can also produce loud bangs after the furnace blower comes on. A filthy furnace burner or ignitor could holdup the burners from igniting, causing gas to build up. When the gas does finally ignite, it will create the loud bang you hear. This could end up being a safety issue, especially if one of these small explosions caused the heat exchanger to break. Not only could that result in a carbon monoxide leak, but you’d end up having to replace the heat exchanger, which can be very pricey.

The other problem, expanding and contracting air ducts, is a common noise complaint for people with metal ducts. If your system is making the loud boom and it is produced by your air ducts, it could be a sign of undersized ducts, closed vents, or a clogged air filter. Rob's Albertan Service Experts is happy to come out to diagnose your trouble and get your home back to order. Also, this will also provide improved comfort as well.

Whining Noise

If you hear a squealing sound, it could be the shaft bearings are in need of oil, there is an issue with the blower belt, or the blower motor is malfunctioning. A seasonal system tune-up will help discover these issues before they become big problems so make sure you give us a call at 780-800-9047 and we’ll make sure your heating equipment is ready to keep you safe and cozy all winter long.

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