When your furnace is working properly, it should give warmth without generating too much sound. While it’s common to catch your furnace making noise as it begins running, other disruptions are showing your furnace requires immediate professional assistance.
Here are some of the most frequent furnace noises and what they can mean. If your furnace is making an atypical noise, our friendly heating professionals are here to assist with the best furnace repair in Ballwin and St. Charles, Missouri.
1. Furnace Making a Banging Noise
You might have a critical problem 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 include gas accumulating in your furnace or a ductwork problem.
Banging Sounds Coming from Your Furnace
Your heating system turns dirty over time, so that’s why it’s important to schedule yearly furnace maintenance with Air Alliance Team. One of the jobs our pros do during this appointment is clean your furnace’s burners. When this component gets grimy, you could hear your furnace making a loud rumbling noise when ignition takes more time. The resulting gas buildup might fracture your furnace’s heat exchanger, where natural gas turns into heat. Any fractures in it can discharge carbon monoxide, which is regularly emitted outdoors. This toxic gas can be lethal in large concentrations.
If you’re noticing banging or knocking sounds coming from your furnace, Air Alliance Team urges you to turn it off and calling us at 636-206-4250. Excessive natural gas in your furnace or a broken heat exchanger are dangerous issues that require prompt repairs.
Banging Sounds Coming from Your Ductwork
Your furnace works with ductwork to provide hot air across your residence. If the ductwork wasn’t installed properly or is aging, it can make a lot of noise when your furnace is on. This might be the case if your furnace makes a banging noise when it shuts off. Call Air Alliance Team at 636-206-4250 and we’ll figure out the problem.
2. Furnace Making a Buzzing Noise
If you notice 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 relies on an internal transformer to work on the correct voltage. If wires or the box needs to be tightened, you might detect a low humming noise in the furnace when off. Your furnace also has a blower motor, which sends hot or cooled air across your rooms, and a capacitor, which starts the motor. If either of these components are fading, they will buzz when the furnace starts.
3. Furnace Making a Rattling Noise
If your furnace is making a rattling noise, it could be due to something little, like a loose screw, or something serious, like a broken piece. In either case, we advise shutting your furnace off and getting in touch with our heating professionals at 636-206-4250 for support.
4. Furnace Making a Squealing Noise
If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s making an effort to alert you it could use some TLC. If you’ve skipped furnace maintenance recently, belts could be worn down or a bearing could need to be lubricated. We realize that maintenance sometimes slips your mind, but our pros 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 notice whistling while the furnace is on if a floor vent is loose. If you’ve checked your vents but are still noticing noise, Air Alliance Team can help. It’s important to get loose ductwork repaired fast, since it can make comfort issues in your house and drive up your utility costs.
6. Furnace Making a Grinding Noise
It’s not a positive sign if you notice your furnace making a grinding noise. This metal-on-metal racket typically means there’s an issue with your furnace’s blower. Shut down your furnace off instantly and reach our pros at 636-206-4250 for support.
When you’re noticing an uncommon noise from your furnace, Air Alliance Team is ready to support you. Contact us at 636-206-4250 to book your furnace repair appointment today.