Why Your Furnace May Be Making These Noises

This is the time of year 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 inspected. A big problem you may run into 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 noise that sounds like metal on metal, there is probably something defective with the blower wheel. If you hear a sound like this, power off your furnace immediately and call Air Engineers Service Experts to inspect the system. There are a few things that could be wrong 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 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 turns on, there are a handful of things that could be going on. Two typical issues are a dirty furnace burner or ignitor. Extending and contracting air ducts can also create loud bangs after the furnace blower comes on. A dirty 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 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 would also have to replace the heat exchanger, which can be very expensive. 

The other issue, stretching and contracting air ducts, is a common noise complaint for homeowners 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, closed vents, or a clogged air filter. Air Engineers Service Experts is happy to come out to diagnose your issue and get your home back in working order. Ultimately, this will also result in improved comfort as well. 

Whining Noise 

If you hear a high-pitched noise, it could be the blower belt, shaft bearings in need of oil, or even a malfunctioning blower motor. A routine heating tune-up will help discover these issues before they become big problems so make sure you give us a call at 904-450-5672 and we’ll make sure your heating equipment is ready to keep you safe and comfortable all winter long. 

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