Why Your Furnace May Be Making These Noises

November 23, 2016

It’s that time of year when people start turning on their heating systems to settle in for a cold winter. Unfortunately, when some heaters start up, especially if it hasn’t undergone a seasonal heating tune-up, there are some issues that need to be examined. A serious problem you may run into is your furnace making unusual noises – take a look at these furnace noises you should never disregard.

Scraping Sound

If you hear a loud scratching 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 ASAP and call Levy & Son Service Experts to inspect the system. There are multiple things that could be amiss with the blower wheel. First, it could just be loose and if the component is not too damaged, can be tightened. Second, it may be that the blower wheel is broken and will require replacement. Or third, it may be that the motor mount itself broke, causing the complete blower assembly to rattle uncontrollably. One of our service experts would be happy to come out and take a look, and get you back to the noiseless and comfortable home you have come to adore.

Loud Bang When Furnace Starts

If there is a loud bang when your furnace turns on, there are a handful of things that could be going on. Two common things are a dirty furnace burner or ignitor. Expanding and contracting air ducts can also produce loud sounds after the furnace blower comes on. A soiled furnace burner or ignitor could holdup the burners from igniting, resulting in gas to build up. When the gas finally ignites, it will create the loud boom you hear. This could cause a safety issue, especially if one of these small explosions caused the heat exchanger to break. Not only could that cause a carbon monoxide leak, but you would also have to replace the heat exchanger, which may be very pricey.

The other issue, expanding and contracting air ducts, is a typical noise complaint for homes with metal ducts. If your furnace is making the loud pop and it is caused by your air ducts, it could be a sign of undersized ducts, obstructed vents, or a clogged air filter. Levy & Son Service Experts is happy to visit your home to diagnose your problem and get your home back to order. Ultimately, this will also give you improved comfort as well.

Whining Noise

If you hear a squealing 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. A routine furnace tune-up will help catch these issues before they become major problems so make sure you call us at 469-250-0932 and we’ll make sure your furnace is ready to keep you safe and warm all winter long.

Contact Us