When your furnace is working properly, it should give warmth without generating too much sound. While it’s expected to notice your furnace making noise as it turns on, other sounds are signaling your furnace requires immediate professional support.

Here are some of the most common furnace noises and what they might mean. If your furnace is making a strange noise, our friendly heating specialists are here to help with the best furnace repair in Plover, Wisconsin.

1. Furnace Making a Banging Noise

You could have an urgent situation on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it can 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 gets filthy over time, so that’s why it’s critical to book yearly furnace maintenance with Point Heating & Cooling. One of the things our techs perform during this work is clean your furnace’s burners. When this piece gets grubby, you may hear your furnace making a loud rumbling noise when ignition takes longer than normal. The resulting gas buildup may break your furnace’s heat exchanger, where natural gas changes into heat. Any cracks in it can leak carbon monoxide, which is regularly vented outdoors. This hazardous gas can be deadly in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Point Heating & Cooling recommends turning it off and contacting us at 715-504-0533. Significant natural gas in your furnace or a fractured heat exchanger are dangerous problems that should get prompt service.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to move hot air around your residence. If the ductwork wasn’t installed right or is getting dated, it can make a lot of noise when your furnace is on. This can be the issue if your furnace makes a banging noise when it shuts off. Contact Point Heating & Cooling at 715-504-0533 and we’ll pinpoint the problem.

2. Furnace Making a Buzzing Noise

If you hear your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound usually means there’s an electrical problem, 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 isn’t tight enough, you could detect a low humming noise in the furnace when off. Your furnace also works with a blower motor, which sends hot or cooled air throughout your rooms, and a capacitor, which turns on the motor. If either of these components 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 can be due to something little, like an unsecure screw, or something major, like a broken piece. In either case, we urge you to shut your furnace off and getting in touch with our heating professionals at 715-504-0533 for help.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s making an effort to tell you it could use some TLC. If you’ve forgotten furnace maintenance the last couple of years, belts could be worn out or a bearing might need to be lubricated. We realize that maintenance often slips your mind, but our technicians can get your furnace heating quietly again rapidly.

5. Furnace Making a Whistling Noise

When you’re noticing 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 operating if a floor vent isn’t tight. If you’ve examined your vents but are still noticing noise, Point Heating & Cooling can help. It’s important to get loose ductwork fixed quickly, since it can result in comfort troubles in your home and drive up your utility costs.

6. Furnace Making a Grinding Noise

It’s not an encouraging sign if you detect your furnace making a grinding noise. This metal-on-metal sound often means there’s trouble with your furnace’s blower. Switch off your furnace off right away and contact us at 715-504-0533 for assistance.

When you’re hearing a weird noise from your furnace, Point Heating & Cooling is here to help. Contact us at 715-504-0533 to request your furnace repair appointment today.