Why Your Furnace May Be Making These Noises

November 23, 2016

It’s that time of year when families start turning on their heating systems to settle in for a cold winter. Unfortunately, when some furnaces start up, especially if it hasn’t received a yearly heating tune-up, there are some issues that need to be examined. A major problem you may discover is your furnace making unusual noises – check out these furnace noises you should never ignore.

Scraping Sound

If you hear a loud raking noise that sounds like metal on metal, there is probably something defective with the blower wheel. If you hear a sound like this, power off your furnace immediately and call Gordon's Service Experts Heating & Air Conditioning to inspect the furnace. There are multiple things that could be amiss with the blower wheel. First, it may just be loose and if the component is not too harmed, can be tightened. Second, it may be that the blower wheel is broken and will require replacement. Or third, it could be that the motor mount itself broke, causing the entire blower assembly to vibrate uncontrollably. One of our service technicians would be happy to come out and take a look, and get you back to the silent and warm home you have come to adore.

Loud Bang When Furnace Starts

If there is a loud pop when your furnace turns on, there are a couple things that could be happening. Two typical problems are a dirty furnace burner or ignitor. Extending and contracting air ducts can also create loud booms after the heating blower turns on. A filthy furnace burner or ignitor could holdup the burners from igniting, forcing gas to build up. When the gas finally ignites, it will create the loud pop you hear. This could end up being 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 would also have to replace the heat exchanger, which may be very pricey.

The other problem, expanding and contracting air ducts, is a usual noise complaint for people with metal ducts. If your system is making the loud boom and it is caused by your air ducts, it could be a sign of undersized ducts, closed vents, or a clogged air filter. Gordon's Service Experts Heating & Air Conditioning is happy to set up an appointment to diagnose your trouble and get your home back in shape for the winter. Additionally, this will also provide improved comfort as well.

Whining Noise

If you hear a high-pitched sound, it could be the blower belt, shaft bearings in need of oil, or even a malfunctioning blower motor. An annual heating tune-up will help find these issues before they become serious problems so make sure you call us at 405-432-2197 and we’ll make sure your heating equipment is ready to keep you safe and comfortable all winter long.

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