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 had a seasonal heating tune-up, there are some troubles that need to be assessed. A serious problem you may encounter is your furnace making unusual noises – take a look at these furnace noises you should never neglect.

Scraping Sound

If you hear a loud raking noise that sounds like metal on metal, there is probably something faulty with the blower wheel. If you hear a sound like this, turn off your furnace right away and call Boehmers/Cronin Emery Service Experts to inspect the furnace. There are a few things that could be amiss with the blower wheel. First, it could just be loose and if the part is not too damaged, can be tightened. Second, it could be that the blower wheel is broken and will require replacement. Or third, it could be that the motor mount actually broke, causing the complete blower assembly to shake 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 cozy home you have come to expect.

Loud Bang When Furnace Starts

If there is a loud bang when your furnace kicks on, there are a few things that could be occurring. Two typical things are a dirty furnace burner or ignitor. Extending and contracting air ducts can also create loud booms after the heating blower turns 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 boom you hear. This could result in a safety issue, especially if one of the small explosions caused the heat exchanger to break. Not only could that produce a carbon monoxide leak, but you would also have to replace the heat exchanger, which can be very pricey.

The other problem, expanding and contracting air ducts, is a usual noise complaint for homes with metal ducts. If your system is making the loud pop and it is a result of your air ducts, it could be a sign of undersized ducts, blocked vents, or a clogged air filter. Boehmers/Cronin Emery Service Experts 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 give you improved comfort as well.

Whining Noise

If you hear a whining disturbance, it could be the shaft bearings are in need of oil, there is an issue with the blower belt, or the blower motor is malfunctioning. A routine system tune-up will help catch these issues before they become serious problems so make sure you call us at 519-804-1617 and we’ll make sure your furnace is ready to keep you safe and warm all winter long.

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