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 undergone a yearly heating tune-up, there are some problems that need to be examined. A big problem you may discover is your furnace making funny noises – check out these furnace noises you should never neglect.

Scraping Sound

If you hear a loud raking sound that sounds like metal on metal, there is probably something faulty with the blower wheel. If you hear something like this, shut off your furnace ASAP and call Chief / Bauer Service Experts Heating & Air Conditioning to inspect the furnace. There are multiple things that could be faulty with the blower wheel. First, it may just be loose and if the component is not too impaired, can be tightened. Second, it might be that the blower wheel is broken and will require replacement. Or third, it could be that the motor mount actually broke, causing the whole blower assembly to shake 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 comes on, there are a few things that could be occurring. Two general problems are a dirty furnace burner or ignitor. Extending and contracting air ducts can also cause loud bangs after the heating system blower starts up. A dirty furnace burner or ignitor could delay the burners from igniting, forcing gas to build up. When the gas finally does ignite, it will create the loud pop you hear. This could result in a safety issue, especially if one of those 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 could 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 bang and it is produced by your air ducts, it could be an indication of undersized ducts, blocked vents, or a clogged air filter. Chief / Bauer Service Experts Heating & Air Conditioning is happy to come out to diagnose your trouble and get your home back in working order. Ultimately, this will also provide improved comfort as well.

Whining Noise

If you hear a whining sound, it could be the blower motor is malfunctioning, the shaft bearings are in need of oil, or an issue with the blower belt. An annual heating tune-up will help catch these issues before they become big problems so make sure you call us at 217-689-2469 and we’ll make sure your heating system is ready to keep you safe and warm all winter long.

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