Why Your Furnace May Be Making These Noises

Now is when homeowners start turning on their furnaces to settle in for a cold winter. Unfortunately, when some heating systems start up, especially if it hasn’t undergone a fall heating tune-up, there are some problems that need to be assessed. A big problem you may discover is your furnace making funny noises – check out these furnace noises you should never ignore. 

Scraping Sound 

If you hear a loud scratching racket that sounds like metal on metal, there is possibly something faulty with the blower wheel. If you hear a sound like this, turn off your furnace right away and call Service Experts Heating & Air Conditioning to inspect the equipment. There are multiple things that could be amiss with the blower wheel. First, it could just be loose and if the component is not too harmed, can be tightened. Second, it might be that the blower wheel is broken and needs to be replaced. Or third, it may be that the motor mount actually broke, causing the entire blower assembly to rattle uncontrollably. One of our service technicians would be happy to come over and take a look, and get you back to the silent and comfortable home you have come to adore. 

Loud Bang When Furnace Starts 

If there is a loud pop when your furnace comes on, there are a couple things that could be occurring. Two general issues are a dirty furnace burner or ignitor. Stretching and contracting air ducts can also cause loud sounds after the heating blower starts up. A dirty furnace burner or ignitor could holdup the burners from igniting, forcing gas to build up. When the gas finally ignites, it will create the loud bang you hear. This could end up being a safety issue, especially if one of those small explosions caused the heat exchanger to deteriorate. Not only could that result in a carbon monoxide leak, but you would also have to replace the heat exchanger, which may be very pricey. 

The other issue, extending and contracting air ducts, is a usual noise complaint for homeowners with metal ducts. If your furnace is making the loud pop and it is a result of your air ducts, it could be a symptom of undersized ducts, obstructed vents, or a clogged air filter. Service Experts Heating & Air Conditioning is happy to visit your home to diagnose your trouble and get your home back in shape for the winter. 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 seasonal system tune-up will help discover these issues before they become major problems so make sure you give us a call at 954-736-4314 and we’ll make sure your furnace is ready to keep you safe and warm all winter long.