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 received a yearly heating tune-up, there are some problems that need to be inspected. A serious problem you may discover is your furnace making weird noises – read about these furnace noises you should never ignore.

Scraping Sound

If you hear a loud scratching racket that sounds like metal on metal, there is likely something wrong with the blower wheel. If you hear something like this, power off your furnace immediately and call Jack Nelson Service Experts Heating & Air Conditioning 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 piece is not too damaged, can be tightened. Second, it might be that the blower wheel is broken and in need of replacement. Or third, it might be that the motor mount is what broke, causing the whole blower assembly to shake uncontrollably. One of our service experts would be happy to come over and take a look, and get you back to the silent and comfortable home you have come to expect.

Loud Bang When Furnace Starts

If there is a loud boom when your furnace kicks on, there are a few things that could be happening. Two typical 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 dirty furnace burner or ignitor could delay the burners from igniting, resulting in gas to build up. When the gas does finally ignite, it will create the loud boom you hear. This could cause a safety issue, especially if one of the small explosions caused the heat exchanger to break. Not only could that cause 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 usual noise complaint for people with metal ducts. If your furnace is making the loud boom and it is produced by your air ducts, it could be an indication of undersized ducts, blocked vents, or a clogged air filter. Jack Nelson Service Experts Heating & Air Conditioning is happy to come out to diagnose your trouble and get your home back in working order. Additionally, this will also give you 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. An annual heating tune-up will help catch these issues before they become serious problems so make sure you give us a call at 918-212-8927 and we’ll make sure your heating system is ready to keep you safe and comfortable all winter long.

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