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

Here are some of the most frequent furnace noises and what they could be signaling. If your furnace is making a strange noise, our friendly heating pros are here to help with the best furnace repair in Mount Horeb, Wisconsin.

1. Furnace Making a Banging Noise

You might have an urgent situation on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it can indicate there could be a couple of problems. These involve gas increasing in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system gets grimy over the years, so that’s why it’s critical to schedule routine furnace maintenance with JW Brager Heating and Cooling. One of the tasks our professionals do during this appointment is clean your furnace’s burners. When this component gets grimy, you might hear your furnace making a loud rumbling noise when ignition is delayed. The subsequent gas buildup might break your furnace’s heat exchanger, where natural gas transforms into heat. Any cracks in it can discharge carbon monoxide, which is regularly vented away from your home. This toxic gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, JW Brager Heating and Cooling recommends turning it off and calling us at 608-447-0555. Significant natural gas in your furnace or a cracked heat exchanger are serious problems that necessitate prompt repairs.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to deliver heated air around your house. If the ductwork wasn’t designed properly or is getting dated, it can make a lot of noise when your furnace is on. This could be the issue if your furnace makes a banging noise when it shuts off. Get in touch with JW Brager Heating and Cooling at 608-447-0555 and we’ll pinpoint the problem.

2. Furnace Makes a Buzzing Sound

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

Your furnace relies on an internal transformer to run on the proper voltage. If wires or the box needs to be tightened, you may detect a low humming noise in the furnace when off. Your furnace also has a blower motor, which moves warm or cold air throughout your home, and a capacitor, which turns on the motor. If either of these pieces are going out, they will buzz when the furnace switches on.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it can be related to something minor, like a loose screw, or something major, like a broken component. In either case, we advise shutting your furnace off and calling our heating professionals at 608-447-0555 for assistance.

4. Furnace Squeals

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

5. Furnace Making a Whistling Noise

When you’re hearing your furnace making a whistling noise, it’s likely because of an air leak in your ductwork. You might also notice whistling while the furnace is running if a floor vent isn’t secure. If you’ve examined your vents but are still sensing whistling, JW Brager Heating and Cooling can assist you. It’s essential to get loose ductwork fixed fast, because it can result in comfort troubles in your residence and drive up your gas expenses.

6. Furnace Making a Grinding Noise

It’s not a good sign if you detect your furnace making a grinding noise. This metal-on-metal noise often means there’s trouble with your furnace’s blower. Shut down your furnace off immediately and call us at 608-447-0555 for support.

When you’re getting an atypical noise from your furnace, JW Brager Heating and Cooling is available to support you. Contact us at 608-447-0555 to book your furnace repair appointment now.