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 had a seasonal heating tune-up, there are some issues that need to be inspected. A big problem you may discover is your furnace making unusual noises – check out these furnace noises you should never ignore.

Scraping Sound

If you hear a loud scraping racket that sounds like metal on metal, there is possibly something defective with the blower wheel. If you hear something like this, power off your furnace ASAP and call Rolf Griffin Service Experts Heating & Air Conditioning to inspect the furnace. There are multiple things that could be faulty with the blower wheel. First, it could 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 actually broke, causing the entire blower assembly to vibrate uncontrollably. One of our service experts would be happy to come out and take a look, and get you back to the silent and comfortable 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 occurring. Two common things are a dirty furnace burner or ignitor. Expanding and contracting air ducts can also cause loud bangs after the furnace blower comes on. A dirty furnace burner or ignitor could holdup the burners from igniting, causing 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 those small explosions caused the heat exchanger to break. Not only could that produce a carbon monoxide leak, but you would also have to replace the heat exchanger, which could be very expensive.

The other issue, stretching and contracting air ducts, is a common noise complaint for homes with metal ducts. If your furnace is making the loud bang and it is caused by your air ducts, it could be a symptom of undersized ducts, obstructed vents, or a clogged air filter. Rolf Griffin Service Experts Heating & Air Conditioning is happy to visit your home to diagnose your issue and get your home back to order. Ultimately, this will also give you improved comfort as well.

Whining Noise

If you hear a high-pitched 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. A seasonal furnace tune-up will help catch these issues before they become major problems so make sure you call us at 260-557-1275 and we’ll make sure your furnace is ready to keep you safe and warm all winter long.

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