Why Your Furnace May Be Making These Noises

November 23, 2016

Now is 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 undergone a yearly heating tune-up, there are some problems that need to be examined. A big problem you may discover is your furnace making weird noises – check out these furnace noises you should never neglect.

Scraping Sound

If you hear a loud raking sound that sounds like metal on metal, there is probably something faulty with the blower wheel. If you hear something like this, turn off your furnace ASAP and call Chief/Bauer Service Experts to inspect the system. There are multiple things that could be faulty with the blower wheel. First, it could just be loose and if the component is not too damaged, can be tightened. Second, it might be that the blower wheel is broken and will require replacement. Or third, it may be that the motor mount actually broke, causing the complete blower assembly to shake uncontrollably. One of our service professionals would be happy to come out and take a look, and get you back to the silent and warm home you have come to love.

Loud Bang When Furnace Starts

If there is a loud boom when your furnace comes on, there are a couple things that could be occurring. Two general problems are a dirty furnace burner or ignitor. Extending and contracting air ducts can also cause loud bangs after the heating system blower starts up. A dirty furnace burner or ignitor could delay the burners from igniting, forcing gas to build up. When the gas does finally ignite, it will create the loud pop you hear. This could result in a safety issue, especially if one of these 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 can be very costly.

The other problem, stretching and contracting air ducts, is a typical noise complaint for homes with metal ducts. If your equipment is making the loud pop and it is produced by your air ducts, it could be an indication of undersized ducts, blocked vents, or a clogged air filter. Chief/Bauer Service Experts is happy to visit your home to diagnose your trouble and get your home back in working order. Ultimately, this will also result in 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 routine furnace tune-up will help find these issues before they become big problems so make sure you call us at 217-689-2469 and we’ll make sure your furnace is ready to keep you safe and comfortable all winter long.

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