Why Your Furnace May Be Making These Noises

November 23, 2016

This is the time of year families start turning on their heaters to settle in for a frigid winter. Unfortunately, when some heating systems start up, especially if it hasn’t received a yearly heating tune-up, there are some problems that need to be examined. A big problem you may run into is your furnace making unusual noises – take a look at these furnace noises you should never neglect.

Scraping Sound

If you hear a loud scratching noise that sounds like metal on metal, there is probably something wrong with the blower wheel. If you hear a sound like this, shut off your furnace immediately and call Sunbeam Service Experts Heating & Air Conditioning to inspect the furnace. There are a couple things that could be faulty with the blower wheel. First, it may just be loose and if the component is not too damaged, can be tightened. Second, it could be that the blower wheel is broken and will require replacement. Or third, it may be that the motor mount is what broke, causing the whole blower assembly to rattle uncontrollably. One of our service professionals would be happy to come to your home and take a look, and get you back to the noiseless and warm home you have come to expect.

Loud Bang When Furnace Starts

If there is a loud bang when your furnace turns on, there are a couple things that could be occurring. Two general issues are a dirty furnace burner or ignitor. Stretching and contracting air ducts can also create loud bangs 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 finally ignites, it will create the loud bang you hear. This could result in a safety issue, especially if one of those small explosions caused the heat exchanger to deteriorate. Not only could that result in a carbon monoxide leak, but you’d end up having to replace the heat exchanger, which could be very pricey.

The other issue, extending and contracting air ducts, is a typical noise complaint for homes with metal ducts. If your system is making the loud pop and it is produced by your air ducts, it could be an indication of undersized ducts, obstructed vents, or a clogged air filter. Sunbeam 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 result in improved comfort as well.

Whining Noise

If you hear a whining disturbance, 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 system tune-up will help catch these issues before they become major problems so make sure you contact us at 716-427-6807 and we’ll make sure your heating equipment is ready to keep you safe and warm all winter long.

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