Why Your Furnace May Be Making These Noises

November 23, 2016

It’s that time of year when people start turning on their furnaces to settle in for a long winter. Unfortunately, when some heating systems start up, especially if it hasn’t received a seasonal heating tune-up, there are some problems that need to be assessed. A serious problem you may encounter is your furnace making funny noises – check out these furnace noises you should never neglect.

Scraping Sound

If you hear a loud scratching sound that sounds like metal on metal, there is possibly something faulty with the blower wheel. If you hear something like this, turn off your furnace ASAP and call TML Service Experts to inspect the equipment. There are a few things that could be faulty with the blower wheel. First, it might just be loose and if the piece is not too harmed, can be tightened. Second, it might be that the blower wheel is broken and needs to be replaced. Or third, it may be that the motor mount itself broke, causing the complete blower assembly to shake uncontrollably. One of our service experts would be happy to come to your home and take a look, and get you back to the noiseless and comfortable home you have come to expect.

Loud Bang When Furnace Starts

If there is a loud bang when your furnace turns on, there are a couple things that could be happening. Two typical problems are a dirty furnace burner or ignitor. Expanding and contracting air ducts can also cause loud bangs after the furnace blower comes on. A soiled furnace burner or ignitor could prevent the burners from igniting, resulting in gas to build up. When the gas finally does ignite, it will create the loud boom you hear. This could end up being a safety issue, especially if one of the small explosions caused the heat exchanger to crack. Not only could that produce a carbon monoxide leak, but you would also have to replace the heat exchanger, which can be very costly.

The other problem, stretching and contracting air ducts, is a typical noise complaint for homes with metal ducts. If your system is making the loud boom and it is a result of your air ducts, it could be a sign of undersized ducts, blocked vents, or a clogged air filter. TML Service Experts is happy to set up an appointment to diagnose your problem and get your home back to order. Also, this will also give you improved comfort as well.

Whining Noise

If you hear a squealing noise, 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. An annual furnace tune-up will help catch these issues before they become big problems so make sure you contact us at 208-488-4892 and we’ll make sure your furnace is ready to keep you safe and comfortable all winter long.

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