When your furnace is running properly, it should give heat without creating too much disruption. While it’s normal to hear your furnace making noise as it turns on, other disruptions are indicating your furnace should get immediate professional assistance.

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 specialists are here to assist with the best furnace repair in Greensburg, Indiana.

1. Furnace Makes a Banging Sound

You could 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 mean there could be several problems. These range from gas increasing in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system becomes dirty over the years, so that’s why it’s critical to set seasonal furnace maintenance with Wallpe Heating & Cooling. One of the jobs our technicians do during this work is clean your furnace’s burners. When this part gets dirty, you might hear your furnace making a loud rumbling noise if ignition takes more time. The resulting gas buildup may crack your furnace’s heat exchanger, where natural gas transforms into heat. Any fractures in it can leak carbon monoxide, which is regularly emitted outside. This dangerous gas can be fatal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Wallpe Heating & Cooling recommends turning it off and contacting us at 812-663-7252. Excessive natural gas in your furnace or a broken heat exchanger are critical issues that should get immediate attention.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to provide hot air around your home. If the ductwork wasn’t installed properly or is aging, it can make a lot of noise when your furnace is heating. This might be the problem if your furnace makes a banging noise when it shuts off. Get in touch with Wallpe Heating & Cooling at 812-663-7252 and we’ll determine the problem.

2. Furnace Buzzes Constantly

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

Your furnace depends on an internal transformer to run on the correct voltage. If wires or the box needs to be tightened, you could hear a low humming noise in the furnace when off. Your furnace also uses a blower motor, which moves warm or cold air across your rooms, 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 Rattles

If your furnace is making a rattling noise, it could be the result of something small, like an unsecure screw, or something serious, like a broken component. In either case, we urge you to shut your furnace off and calling our heating professionals at 812-663-7252 for assistance.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s trying to get your attention it needs some TLC. If you’ve skipped furnace maintenance the last couple of years, belts could be worn down or a bearing may need to be lubed. We realize that maintenance frequently slips your mind, but our technicians can get your furnace heating quietly again rapidly.

5. Furnace Making a Whistling Noise

When you’re hearing your furnace making a whistling noise, it’s typically due to 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 checked your vents but are still sensing sound, Wallpe Heating & Cooling can assist you. It’s critical to get loose ductwork repaired quickly, because it can make comfort problems in your home and increase your heating 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 racket usually means there’s an issue with your furnace’s blower. Turn off your furnace off immediately and contact us at 812-663-7252 for help.

When you’re noticing a strange noise from your furnace, Wallpe Heating & Cooling is here to support you. Contact us at 812-663-7252 to schedule your furnace repair appointment today.