Why Your Furnace May Be Making These Noises

November 23, 2016

It’s that time of year when homeowners start turning on their furnaces to settle in for a long winter. Unfortunately, when some furnaces start up, especially if it hasn’t received a fall heating tune-up, there are some troubles that need to be examined. A major problem you may encounter is your furnace making funny noises – take a look at these furnace noises you should never ignore.

Scraping Sound

If you hear a loud scraping racket that sounds like metal on metal, there is probably something defective with the blower wheel. If you hear something like this, turn off your furnace immediately and call Norrell Service Experts to inspect the furnace. There are a couple things that could be amiss with the blower wheel. First, it may just be loose and if the part is not too harmed, can be tightened. Second, it might be that the blower wheel is broken and needs to be replaced. 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 to your home and take a look, and get you back to the noiseless 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 handful of things that could be occurring. Two typical issues are a dirty furnace burner or ignitor. Stretching and contracting air ducts can also produce loud bangs after the furnace blower comes on. A soiled furnace burner or ignitor could holdup the burners from igniting, forcing gas to build up. When the gas finally does ignite, 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 crack. Not only could that produce a carbon monoxide leak, but you’d end up having to replace the heat exchanger, which may be very pricey.

The other trouble, expanding and contracting air ducts, is a common 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 a sign of undersized ducts, blocked vents, or a clogged air filter. Norrell Service Experts is happy to come out to diagnose your problem and get your home back to order. Also, this will also result in improved comfort as well.

Whining Noise

If you hear a whining disturbance, it could be the shaft bearings are in need of oil, there is an issue with the blower belt, or the blower motor is malfunctioning. An annual furnace tune-up will help find these issues before they become serious problems so make sure you contact us at 205-267-0023 and we’ll make sure your heating equipment is ready to keep you safe and cozy all winter long.

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