When your furnace is working properly, it should deliver warmth without making too much disruption. While it’s normal to hear your furnace making noise as it turns on, other sounds are showing your furnace needs immediate professional help.

Here are some of the most reported furnace noises and what they could be signaling. If your furnace is making an atypical noise, our friendly heating specialists are here to assist with the best furnace repair in Wisconsin Rapids, Wisconsin.

1. Furnace Making a Banging Noise

You may have a critical situation on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it might indicate there could be several problems. These range from gas building up in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system turns grimy over the years, so that’s why it’s essential to schedule seasonal furnace maintenance with Rapids Sheet Metal Works Inc. One of the jobs our professionals do during this service is clean your furnace’s burners. When this part gets grubby, you might hear your furnace making a loud rumbling noise if ignition takes longer than normal. The following gas buildup may break your furnace’s heat exchanger, where natural gas changes into warm air. Any fractures in it can discharge carbon monoxide, which is regularly emitted away from your home. This hazardous gas can be deadly in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Rapids Sheet Metal Works Inc urges you to turn it off and contacting us at 715-301-0256. Excessive natural gas in your furnace or a broken heat exchanger are dangerous problems that require prompt attention.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to deliver hot air around your house. If the ductwork wasn’t installed correctly or is aging, it can be noisy when your furnace is heating. This might be the problem if your furnace makes a banging noise when it shuts off. Call Rapids Sheet Metal Works Inc at 715-301-0256 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

If you hear your furnace making a buzzing noise, don’t wait to call us. A buzzing sound often means there’s an electrical issue, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to operate on the proper voltage. If wires or the box needs to be tightened, you may notice a low humming noise in the furnace when off. Your furnace also has a blower motor, which distributes hot or cold air throughout your rooms, and a capacitor, which turns on the motor. If either of these parts are failing, they will buzz when the furnace switches on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it may be due to something small, like a loose screw, or something serious, like a broken component. In either case, we advise shutting your furnace off and getting in touch with our heating specialists at 715-301-0256 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s making an effort to alert you it requires some TLC. If you’ve forgotten furnace maintenance the past few years, belts could be worn out or a bearing could need to be lubed. We realize that maintenance often slips your mind, but our technicians can get your furnace running quietly again fast.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s likely due to an air leak in your ductwork. You could 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 sensing whistling, Rapids Sheet Metal Works Inc can help. It’s essential to get loose ductwork fixed fast, since it can make comfort troubles in your house and drive up your heating costs.

6. Furnace Making a Grinding Noise

It’s not a positive sign if you hear your furnace making a grinding noise. This metal-on-metal noise frequently means there’s a problem with your furnace’s blower. Switch off your furnace off right away and call us at 715-301-0256 for support.

When you’re noticing a strange noise from your furnace, Rapids Sheet Metal Works Inc is available to help. Contact us at 715-301-0256 to book your furnace repair appointment today.