Why Your Furnace May Be Making These Noises

November 23, 2016

This is the time of year people start turning on their heaters to settle in for a frigid winter. Unfortunately, when some furnaces start up, especially if it hasn’t received a fall heating tune-up, there are some issues that need to be inspected. A big problem you may encounter is your furnace making unusual 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 immediately and call Calverley Service Experts to inspect the equipment. There are a few 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 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 vibrate uncontrollably. One of our service professionals would be happy to come out and take a look, and get you back to the noiseless and comfortable home you have come to love.

Loud Bang When Furnace Starts

If there is a loud bang when your furnace kicks on, there are a couple things that could be going on. Two typical issues are a dirty furnace burner or ignitor. Extending and contracting air ducts can also create loud bangs after the furnace blower comes on. A soiled furnace burner or ignitor could prevent the burners from igniting, forcing gas to build up. When the gas finally ignites, 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 break. Not only could that produce a carbon monoxide leak, but you’d end up having to replace the heat exchanger, which may be very expensive.

The other problem, expanding and contracting air ducts, is a usual noise complaint for people with metal ducts. If your equipment is making the loud boom and it is caused by your air ducts, it could be a sign of undersized ducts, blocked vents, or a clogged air filter. Calverley Service Experts is happy to visit your home to diagnose your issue and get your home back in shape for the winter. Also, this will also provide improved comfort as well.

Whining Noise

If you hear a squealing noise, it could be the blower motor is malfunctioning, the shaft bearings are in need of oil, or an issue with the blower belt. A seasonal system tune-up will help catch these issues before they become major problems so make sure you give us a call at 817-380-5647 and we’ll make sure your furnace is ready to keep you safe and cozy all winter long.

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