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 heating systems start up, especially if it hasn’t had a fall heating tune-up, there are some issues that need to be inspected. A serious problem you may run into is your furnace making funny noises – check out these furnace noises you should never disregard.

Scraping Sound

If you hear a loud scratching noise that sounds like metal on metal, there is possibly something faulty with the blower wheel. If you hear a noise like this, shut 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 may just be loose and if the part is not too damaged, can be tightened. Second, it may 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 professionals would be happy to come over and take a look, and get you back to the silent and comfortable home you have come to adore.

Loud Bang When Furnace Starts

If there is a loud boom when your furnace kicks on, there are a few things that could be occurring. Two typical issues are a dirty furnace burner or ignitor. Expanding and contracting air ducts can also cause loud sounds after the heating system blower starts up. A soiled furnace burner or ignitor could holdup 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 the small explosions caused the heat exchanger to break. Not only could that result in a carbon monoxide leak, but you will have to replace the heat exchanger, which can be very pricey.

The other problem, stretching and contracting air ducts, is a common noise complaint for homes with metal ducts. If your furnace is making the loud boom and it is produced by 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 set up an appointment to diagnose your trouble and get your home back in working order. Also, this will also give you 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 furnace tune-up will help catch these issues before they become major problems so make sure you contact us at 303-647-5853 and we’ll make sure your heating system is ready to keep you safe and warm all winter long.

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