When your furnace is operating correctly, it should give warmth without creating too much sound. While it’s common to notice your furnace making noise as it begins running, other noises are indicating your furnace needs immediate professional support.
Here are some of the most common furnace noises and what they can mean. If your furnace is making a strange noise, our friendly heating professionals are here to assist with the best furnace repair in Dundas and Northfield, Minnesota.
1. Furnace Making a Banging Noise
You may have an urgent issue on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it may indicate there could be a few problems. These range from gas accumulating in your furnace or a ductwork situation.
Banging Sounds Coming from Your Furnace
Your heating system turns dirty as time passes, so that’s why it’s essential to book annual furnace maintenance with Better Air. One of the jobs our pros perform during this work is clean your furnace’s burners. When this component gets grubby, you could hear your furnace making a loud rumbling noise if ignition takes more time. The subsequent gas buildup might crack your furnace’s heat exchanger, where natural gas turns into warmth. Any fractures in it can emit carbon monoxide, which is normally emitted outdoors. This toxic gas can be lethal in large concentrations.
If you’re noticing banging or knocking sounds coming from your furnace, Better Air recommends turning it off and contacting us at 507-663-1208. Significant natural gas in your furnace or a ruptured heat exchanger are serious issues that require fast attention.
Banging Sounds Coming from Your Ductwork
Your furnace works with ductwork to deliver warm air throughout your home. If the ductwork wasn’t installed correctly or is getting old, it can be noisy when your furnace runs. This might be the issue if your furnace makes a banging noise when it shuts off. Contact Better Air at 507-663-1208 and we’ll determine the problem.
2. Furnace Buzzes Constantly
If you hear your furnace making a buzzing noise, don’t delay calling us. A buzzing sound frequently means there’s an electrical issue, like with its transformer, blower motor or capacitor.
Your furnace relies on an internal transformer to work on the right voltage. If wires or the box isn’t tight enough, you might hear a low humming noise in the furnace when off. Your furnace also works with a blower motor, which sends hot or chilly air throughout your space, and a capacitor, which turns on the motor. If either of these parts are failing, they will buzz when the furnace starts.
3. Furnace Rattles
If your furnace is making a rattling noise, it could be related to something small, like an unsecure screw, or something critical, like a broken component. In either case, we advise shutting your furnace off and contacting our heating pros at 507-663-1208 for help.
4. Furnace Is Making a High-Pitched Squealing Sound
If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s making an effort to alert you it requires some TLC. If you’ve skipped furnace maintenance the last couple of years, belts could be worn down or a bearing could need to be lubricated. We realize that maintenance often slips your mind, but our technicians can get your furnace operating quietly again quickly.
5. Furnace Making a Whistling Noise
When you’re detecting your furnace making a whistling noise, it’s likely because of an air leak in your ductwork. You may also hear whistling while the furnace is working if a floor vent isn’t secure. If you’ve looked at your vents but are still noticing whistling, Better Air can assist you. It’s important to get loose ductwork taken care of fast, since it can make comfort troubles in your house and increase your heating costs.
6. Furnace Makes Noise that Sounds Like Scraping Metal
It’s not a positive sign if you notice your furnace making a grinding noise. This metal-on-metal noise usually means there’s trouble with your furnace’s blower. Turn off your furnace off instantly and call us at 507-663-1208 for help.
When you’re getting a weird noise from your furnace, Better Air is here to provide assistance. Contact us at 507-663-1208 to schedule your furnace repair appointment today.