When your furnace is operating like it should, it should deliver warm air without creating too much sound. While it’s expected to hear your furnace making noise as it starts up, other sounds are indicating your furnace requires immediate professional support.

Here are some of the most common furnace noises and what they could be signaling. If your furnace is making an odd noise, our friendly heating professionals are here to help with the best furnace repair in Zelienople, Pennsylvania.

1. Furnace Making a Banging Noise

You may have a serious problem on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it might mean there could be a few problems. These range from gas building up in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system gets grimy over time, so that’s why it’s critical to schedule routine furnace maintenance with Knoechel Heating. One of the tasks our techs perform during this service is clean your furnace’s burners. When this part gets grimy, you could hear your furnace making a loud rumbling noise after ignition is delayed. The ensuing gas buildup may break your furnace’s heat exchanger, where natural gas transforms into heat. Any breaks in it can leak carbon monoxide, which is ordinarily emitted away from your home. This dangerous gas can be deadly in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Knoechel Heating advises turning it off and reaching us at 724-425-5852. Too much natural gas in your furnace or a broken heat exchanger are serious troubles that require prompt repairs.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to move heated air across your house. If the ductwork wasn’t put in correctly or is getting dated, it can be noisy when your furnace is on. This could be the case 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 Buzzes Constantly

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

Your furnace uses an internal transformer to run on the correct voltage. If wires or the box is loose, you could notice a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves warm or chilly air around your rooms, and a capacitor, which triggers the motor. If either of these components are failing, they will buzz when the furnace starts.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it could be the result of something minor, like an unsecure screw, or something critical, like a broken component. In either case, we advise shutting your furnace off and contacting our heating professionals at 724-425-5852 for help.

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s trying to get your attention it needs some TLC. If you’ve forgotten furnace maintenance the past few years, belts could be worn out or a bearing could need to be greased. We know that maintenance frequently slips your mind, but our techs can get your furnace running quietly again fast.

5. Furnace Making a Whistling Noise

When you’re detecting 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 operating if a floor vent is loose. If you’ve looked at your vents but are still hearing whistling, Knoechel Heating can provide support. It’s critical to get loose ductwork taken care of quickly, since it can make comfort issues in your residence and drive up your heating bills.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not a positive sign if you notice your furnace making a grinding noise. This metal-on-metal noise frequently means there’s trouble with your furnace’s blower. Turn off your furnace off instantly and reach our professionals at 724-425-5852 for assistance.

When you’re noticing a weird noise from your furnace, Knoechel Heating is here to support you. Contact us at 724-425-5852 to schedule your furnace repair appointment right away.