Why Your Furnace May Be Making These Noises

November 23, 2016

It’s that time of year when families start turning on their furnaces to settle in for a long winter. Unfortunately, when some furnaces start up, especially if it hasn’t undergone a yearly heating tune-up, there are some issues that need to be inspected. A major 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 scraping noise that sounds like metal on metal, there is probably something defective with the blower wheel. If you hear something like this, turn off your furnace right away and call Service Experts Heating & Air Conditioning to inspect the system. There are a couple things that could be faulty with the blower wheel. First, it might just be loose and if the part is not too harmed, can be tightened. Second, it may be that the blower wheel is broken and needs to be replaced. Or third, it might be that the motor mount is what broke, causing the whole blower assembly to shake uncontrollably. One of our service experts would be happy to come out and take a look, and get you back to the noiseless and comfortable home you have come to love.

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 problems are a dirty furnace burner or ignitor. Expanding and contracting air ducts can also produce loud booms after the furnace blower comes on. A soiled furnace burner or ignitor could holdup the burners from igniting, resulting in gas to build up. When the gas does finally ignite, it will create the loud boom you hear. This could end up being a safety issue, especially if one of those small explosions caused the heat exchanger to crack. Not only could that cause a carbon monoxide leak, but you will have to replace the heat exchanger, which can be very expensive.

The other problem, expanding and contracting air ducts, is a common 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 sign of undersized ducts, closed vents, or a clogged air filter. Service Experts Heating & Air Conditioning is happy to set up an appointment to diagnose your issue and get your home back to order. Ultimately, this will also result in improved comfort as well.

Whining Noise

If you hear a whining 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 routine system tune-up will help catch these issues before they become big problems so make sure you contact us at 330-235-1260 and we’ll make sure your heating system is ready to keep you safe and cozy all winter long.