Why Your Furnace May Be Making These Noises

November 23, 2016

Now is when people start turning on their furnaces to settle in for a long winter. Unfortunately, when some heaters start up, especially if it hasn’t received a fall heating tune-up, there are some issues that need to be examined. A serious problem you may run into is your furnace making unusual noises – read about these furnace noises you should never neglect.

Scraping Sound

If you hear a loud raking racket that sounds like metal on metal, there is probably something faulty with the blower wheel. If you hear a sound like this, power off your furnace immediately and call Peitz Service Experts Heating & Air Conditioning to inspect the furnace. 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 impaired, can be tightened. Second, it could be that the blower wheel is broken and needs to be replaced. Or third, it might be that the motor mount actually broke, causing the whole 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 noiseless and warm home you have come to expect.

Loud Bang When Furnace Starts

If there is a loud pop when your furnace comes on, there are a couple things that could be happening. Two typical problems are a dirty furnace burner or ignitor. Extending and contracting air ducts can also cause loud sounds after the heating system blower starts up. A soiled furnace burner or ignitor could delay 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 end up being a safety issue, especially if one of these small explosions caused the heat exchanger to deteriorate. Not only could that cause a carbon monoxide leak, but you would also have to replace the heat exchanger, which could be very expensive.

The other issue, extending and contracting air ducts, is a typical noise complaint for people with metal ducts. If your equipment is making the loud bang and it is produced by your air ducts, it could be a symptom of undersized ducts, obstructed vents, or a clogged air filter. Peitz Service Experts Heating & Air Conditioning is happy to visit your home to diagnose your issue and get your home back in shape for the winter. Additionally, this will also provide improved comfort as well.

Whining Noise

If you hear a squealing 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 discover these issues before they become big problems so make sure you give us a call at 605-223-0307 and we’ll make sure your heating equipment is ready to keep you safe and comfortable all winter long.

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