Why Your Furnace May Be Making These Noises

November 23, 2016

It’s that time of year when families 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 assessed. A serious problem you may run into is your furnace making weird 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 wrong with the blower wheel. If you hear a noise like this, turn off your furnace ASAP and call Service Experts Heating & Air Conditioning to inspect the system. There are a few things that could be amiss with the blower wheel. First, it could just be loose and if the component is not too damaged, can be tightened. Second, it might be that the blower wheel is broken and will require replacement. Or third, it might 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 to your home and take a look, and get you back to the quiet and warm home you have come to expect.

Loud Bang When Furnace Starts

If there is a loud pop when your furnace kicks on, there are a few things that could be going on. Two general things are a dirty furnace burner or ignitor. Extending and contracting air ducts can also produce loud noises after the furnace blower comes on. A soiled furnace burner or ignitor could delay the burners from igniting, causing gas to build up. When the gas finally does ignite, it will create the loud bang you hear. This could cause a safety issue, especially if one of the small explosions caused the heat exchanger to crack. Not only could that result in a carbon monoxide leak, but you would also have to replace the heat exchanger, which could be very costly.

The other issue, extending and contracting air ducts, is a usual noise complaint for homeowners with metal ducts. If your system is making the loud boom and it is caused by your air ducts, it could be a sign of undersized ducts, closed vents, or a clogged air filter. 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 squealing noise, it could be the blower belt, shaft bearings in need of oil, or even a malfunctioning blower motor. A seasonal heating tune-up will help find these issues before they become big problems so make sure you call us at 318-588-8163 and we’ll make sure your furnace is ready to keep you safe and comfortable all winter long.

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