When your furnace is working properly, it should provide warmth without generating too much disruption. While it’s expected to hear your furnace making noise as it starts up, other sounds are showing your furnace requires immediate professional support.
Here are some of the most common furnace noises and what they might be signaling. If your furnace is making an odd noise, our friendly heating professionals are here to help with the best furnace repair in Cape Girardeau, Missouri.
1. Furnace Makes Banging or Knocking Sounds
You might 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 may signal there could be a few problems. These range from gas accumulating in your furnace or a ductwork problem.
Banging Sounds Coming from Your Furnace
Your heating system turns dirty as time passes, so that’s why it’s important to set seasonal furnace maintenance with Prestige Plumbing and Air. One of the tasks our technicians do during this appointment is clean your furnace’s burners. When this component gets dirty, you could hear your furnace making a loud rumbling noise after ignition is delayed. The resulting gas buildup can crack your furnace’s heat exchanger, where natural gas turns into warm air. Any cracks in it can leak carbon monoxide, which is regularly released outside. This dangerous gas can be lethal in large concentrations.
If you’re noticing banging or knocking sounds coming from your furnace, Prestige Plumbing and Air advises turning it off and reaching us at 573-510-2535. Significant natural gas in your furnace or a broken heat exchanger are hazardous troubles that should get immediate repairs.
Banging Sounds Coming from Your Ductwork
Your furnace works with ductwork to move hot air across your house. If the ductwork wasn’t installed correctly or is getting dated, it can be noisy when your furnace is heating. This might be the issue if your furnace makes a banging noise when it shuts off. Contact Prestige Plumbing and Air at 573-510-2535 and we’ll pinpoint the problem.
2. Furnace Makes a Buzzing Sound
If you hear your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound frequently indicates an electrical situation, like with its transformer, blower motor or capacitor.
Your furnace depends on an internal transformer to run on the proper voltage. If wires or the box isn’t tight enough, you might hear a low humming noise in the furnace when off. Your furnace also has a blower motor, which distributes hot or chilly air across your house, and a capacitor, which starts the motor. If either of these components are going out, they will buzz when the furnace turns on.
3. Furnace Makes Rattling Sounds Like Something Is Loose
If your furnace is making a rattling noise, it may be due to something small, like an unsecure screw, or something major, like a broken piece. In either case, we urge you to shut your furnace off and contacting our heating professionals at 573-510-2535 for help.
4. Furnace Squeals
If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s attempting to get your attention it could use some TLC. If you’ve skipped furnace maintenance the last couple of years, belts could be worn out or a bearing could need to be greased. We know that maintenance often slips your mind, but our technicians can get your furnace running quietly again quickly.
5. Furnace Making a Whistling Noise
When you’re hearing your furnace making a whistling noise, it’s likely due to an air leak in your ductwork. You may also be aware of whistling while the furnace is running if a floor vent isn’t secure. If you’ve checked your vents but are still sensing sound, Prestige Plumbing and Air can assist you. It’s important to get loose ductwork taken care of without delay, since it can result in comfort problems in your residence and drive up your utility expenses.
6. Furnace Makes Noise that Sounds Like Scraping Metal
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 promptly and call our professionals at 573-510-2535 for support.
When you’re hearing a weird noise from your furnace, Prestige Plumbing and Air is ready to support you. Contact us at 573-510-2535 to request your furnace repair appointment today.