Why Your Furnace May Be Making These Noises

November 23, 2016

This is the time of year homeowners start turning on their heaters to settle in for a frigid winter. Unfortunately, when some heaters start up, especially if it hasn’t undergone a seasonal heating tune-up, there are some problems that need to be inspected. A serious problem you may encounter is your furnace making weird noises – read about these furnace noises you should never ignore.

Scraping Sound

If you hear a loud scraping noise that sounds like metal on metal, there is probably something faulty with the blower wheel. If you hear a sound like this, shut off your furnace ASAP and call Service Experts Heating & Air Conditioning to inspect the equipment. There are a few 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 might be that the blower wheel is broken and in need of replacement. Or third, it may be that the motor mount is what broke, causing the whole blower assembly to rattle uncontrollably. One of our service experts would be happy to come to your home and take a look, and get you back to the noiseless and warm home you have come to expect.

Loud Bang When Furnace Starts

If there is a loud boom when your furnace turns on, there are a couple things that could be occurring. Two typical things are a dirty furnace burner or ignitor. Expanding and contracting air ducts can also create loud bangs after the furnace blower comes on. A soiled furnace burner or ignitor could prevent the burners from igniting, causing gas to build up. When the gas does finally ignite, it will create the loud bang you hear. This could cause a safety issue, especially if one of these small explosions caused the heat exchanger to deteriorate. Not only could that result in a carbon monoxide leak, but you would also have to replace the heat exchanger, which can be very pricey.

The other problem, stretching and contracting air ducts, is a common noise complaint for homeowners with metal ducts. If your equipment is making the loud bang and it is a result of your air ducts, it could be a sign of undersized ducts, blocked vents, or a clogged air filter. Service Experts Heating & Air Conditioning is happy to visit your home to diagnose your issue and get your home back in working order. Also, this will also result in improved comfort as well.

Whining Noise

If you hear a high-pitched noise, it could be the blower belt, shaft bearings in need of oil, or even a malfunctioning blower motor. A seasonal heating tune-up will help discover these issues before they become big problems so make sure you contact us at 561-629-1826 and we’ll make sure your heating equipment is ready to keep you safe and warm all winter long.

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