Why Your Furnace May Be Making These Noises

November 23, 2016

Now is when homeowners start turning on their heating systems to settle in for a cold winter. Unfortunately, when some furnaces start up, especially if it hasn’t received a fall heating tune-up, there are some issues that need to be assessed. A big problem you may encounter is your furnace making weird noises – take a look at these furnace noises you should never neglect.

Scraping Sound

If you hear a loud scratching sound 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 ASAP and call Parker Pearce Service Experts Heating & Air Conditioning to inspect the equipment. There are a couple things that could be wrong with the blower wheel. First, it could just be loose and if the part is not too impaired, can be tightened. Second, it might be that the blower wheel is broken and will require replacement. Or third, it could be that the motor mount is what broke, causing the complete blower assembly to vibrate uncontrollably. One of our service professionals would be happy to come over 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 turns on, there are a couple things that could be happening. Two typical issues are a dirty furnace burner or ignitor. Stretching and contracting air ducts can also create loud noises after the heating blower turns on. A filthy furnace burner or ignitor could holdup the burners from igniting, forcing 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 these small explosions caused the heat exchanger to crack. Not only could that produce a carbon monoxide leak, but you will 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 people with metal ducts. If your system is making the loud bang and it is produced by your air ducts, it could be a symptom of undersized ducts, closed vents, or a clogged air filter. Parker Pearce Service Experts Heating & Air Conditioning is happy to come out to diagnose your problem and get your home back to order. Additionally, this will also result in improved comfort as well.

Whining Noise

If you hear a squealing noise, it could be the blower belt, shaft bearings in need of oil, or even a malfunctioning blower motor. A seasonal system tune-up will help discover these issues before they become serious problems so make sure you give us a call at 301-476-4577 and we’ll make sure your heating system is ready to keep you safe and comfortable all winter long.

Contact Us