When your furnace is operating properly, it should provide warm air without creating too much disruption. While it’s expected to hear your furnace making noise as it begins running, other noises are indicating your furnace should get immediate professional help.
Here are some of the most reported furnace noises and what they could be indicating. If your furnace is making an odd noise, our friendly heating pros are here to assist with the best furnace repair in Zelienople, Pennsylvania.
1. Furnace Making a Banging Noise
You could have a critical problem on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it may signal there could be a couple of problems. These range from gas accumulating in your furnace or a ductwork issue.
Banging Sounds Coming from Your Furnace
Your heating system gets dirty over time, so that’s why it’s important to book annual furnace maintenance with Knoechel Heating. One of the jobs our techs do during this service is clean your furnace’s burners. When this component gets grimy, you might hear your furnace making a loud rumbling noise after ignition is delayed. The ensuing gas buildup can break your furnace’s heat exchanger, where natural gas turns into warmth. Any cracks in it can leak carbon monoxide, which is regularly vented outside. This hazardous gas can be lethal in large concentrations.
If you’re hearing banging or knocking sounds coming from your furnace, Knoechel Heating advises turning it off and contacting us at 724-425-5852. Significant natural gas in your furnace or a cracked heat exchanger are dangerous problems that necessitate prompt attention.
Banging Sounds Coming from Your Ductwork
Your furnace uses ductwork to provide heated air throughout your home. If the ductwork wasn’t designed correctly or is getting dated, it can be loud when your furnace is heating. This might be the problem if your furnace makes a banging noise when it shuts off. Contact Knoechel Heating at 724-425-5852 and we’ll figure out the problem.
2. Furnace Making a Buzzing Noise
If you hear your furnace making a buzzing noise, don’t wait to call us. A buzzing sound usually means there’s an electrical issue, like with its transformer, blower motor or capacitor.
Your furnace uses an internal transformer to operate on the correct voltage. If wires or the box needs to be tightened, you may hear a low humming noise in the furnace when off. Your furnace also has a blower motor, which distributes heated or cold air throughout your rooms, and a capacitor, which starts the motor. If either of these components are fading, 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 the result of something small, like an unsecure screw, or something serious, like a broken part. In either case, we recommend shutting off your furnace and getting in touch with our heating professionals at 724-425-5852 for help.
4. Furnace Making a Squealing Noise
If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s making an effort to alert you it requires some TLC. If you’ve forgotten furnace maintenance the last couple of years, belts could be worn out or a bearing could need to be lubed. We are aware that maintenance often slips your mind, but our pros can get your furnace operating quietly again fast.
5. Furnace Makes a Whistling Sound Like Air Escaping
When you’re noticing your furnace making a whistling noise, it’s frequently because of an air leak in your ductwork. You may also hear whistling while the furnace is running if a floor vent isn’t tight. If you’ve examined your vents but are still sensing whistling, Knoechel Heating can help. It’s essential to get loose ductwork taken care of quickly, since it can make comfort issues in your residence and inflate your utility bills.
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 racket typically means there’s an issue with your furnace’s blower. Switch off your furnace off right away and contact our pros at 724-425-5852 for help.
When you’re noticing an uncommon noise from your furnace, Knoechel Heating is available to support you. Contact us at 724-425-5852 to book your furnace repair appointment now.