Why Your Furnace May Be Making These Noises

November 23, 2016

This is the time of year families 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 examined. A serious problem you may encounter is your furnace making weird noises – take a look at these furnace noises you should never disregard.

Scraping Sound

If you hear a loud scraping sound that sounds like metal on metal, there is likely something wrong with the blower wheel. If you hear a noise like this, shut off your furnace right away and call Service Experts Heating & Air Conditioning to inspect the equipment. There are multiple things that could be amiss with the blower wheel. First, it might just be loose and if the piece is not too impaired, can be tightened. Second, it could be that the blower wheel is broken and in need of replacement. Or third, it may be that the motor mount is what broke, causing the complete blower assembly to vibrate uncontrollably. One of our service professionals would be happy to come over and take a look, and get you back to the silent and cozy home you have come to adore.

Loud Bang When Furnace Starts

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

The other trouble, extending and contracting air ducts, is a common noise complaint for homes with metal ducts. If your system is making the loud bang and it is a result of your air ducts, it could be a symptom of undersized ducts, closed vents, or a clogged air filter. Service Experts Heating & Air Conditioning is happy to visit your home to diagnose your problem and get your home back to order. Also, this will also provide improved comfort as well.

Whining Noise

If you hear a squealing disturbance, it could be the blower belt, shaft bearings in need of oil, or even a malfunctioning blower motor. An annual heating tune-up will help discover these issues before they become big problems so make sure you contact us at 352-414-4006 and we’ll make sure your heating system is ready to keep you safe and warm all winter long.

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