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 heating systems start up, especially if it hasn’t received a seasonal heating tune-up, there are some issues that need to be inspected. A serious problem you may run into is your furnace making funny noises – take a look at these furnace noises you should never ignore.

Scraping Sound

If you hear a loud scratching sound that sounds like metal on metal, there is possibly something faulty with the blower wheel. If you hear a noise like this, shut off your furnace immediately and call Service Experts Heating & Air Conditioning to inspect the system. 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 impaired, can be tightened. Second, it could be that the blower wheel is broken and will require replacement. Or third, it might be that the motor mount itself broke, causing the entire blower assembly to shake uncontrollably. One of our service professionals would be happy to come over and take a look, and get you back to the quiet and comfortable home you have come to adore.

Loud Bang When Furnace Starts

If there is a loud boom when your furnace kicks on, there are a couple things that could be occurring. Two typical issues are a dirty furnace burner or ignitor. Stretching and contracting air ducts can also create loud sounds after the heating system blower starts up. A soiled furnace burner or ignitor could holdup 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 the small explosions caused the heat exchanger to crack. Not only could that result in a carbon monoxide leak, but you will have to replace the heat exchanger, which could be very pricey.

The other problem, stretching and contracting air ducts, is a typical noise complaint for homes with metal ducts. If your furnace is making the loud boom and it is produced by your air ducts, it could be a symptom of undersized ducts, blocked vents, or a clogged air filter. Service Experts Heating & Air Conditioning is happy to set up an appointment to diagnose your trouble and get your home back in working order. Also, this will also give you improved comfort as well.

Whining Noise

If you hear a squealing sound, 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 seasonal heating tune-up will help catch these issues before they become big problems so make sure you contact us at 303-647-5853 and we’ll make sure your furnace is ready to keep you safe and comfortable all winter long.

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