Why Your Furnace May Be Making These Noises

November 23, 2016

It’s that time of year when families start turning on their furnaces to settle in for a long winter. Unfortunately, when some heating systems start up, especially if it hasn’t had a yearly heating tune-up, there are some problems that need to be examined. A big problem you may encounter is your furnace making funny 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 faulty with the blower wheel. If you hear something like this, turn off your furnace ASAP and call Service Experts Heating & Air Conditioning to inspect the system. There are a couple things that could be faulty with the blower wheel. First, it could just be loose and if the part is not too harmed, can be tightened. Second, it may 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 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 cozy home you have come to love.

Loud Bang When Furnace Starts

If there is a loud bang when your furnace comes on, there are a few things that could be happening. Two common things are a dirty furnace burner or ignitor. Expanding and contracting air ducts can also create loud noises after the furnace blower comes on. A soiled furnace burner or ignitor could holdup the burners from igniting, causing gas to build up. When the gas finally does 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 crack. Not only could that produce a carbon monoxide leak, but you would also have to replace the heat exchanger, which can be very expensive.

The other problem, expanding and contracting air ducts, is a common noise complaint for homes with metal ducts. If your system is making the loud pop and it is produced by your air ducts, it could be a sign of undersized ducts, closed vents, or a clogged air filter. Service Experts Heating & Air Conditioning is happy to set up an appointment to diagnose your problem and get your home back to order. Additionally, this will also give you improved comfort as well.

Whining Noise

If you hear a whining disturbance, it could be the blower belt, shaft bearings in need of oil, or even a malfunctioning blower motor. An annual system tune-up will help catch these issues before they become big problems so make sure you call us at 954-736-4314 and we’ll make sure your heating system is ready to keep you safe and comfortable all winter long.

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