Banging, Hissing and Rattling: What Six Familiar Furnace Noises Can Mean

When your furnace is operating correctly, it should provide heat without generating too much noise. While it’s common to notice your furnace making noise as it turns on, other disruptions are indicating your furnace requires immediate professional assistance.

Here are some of the most frequent furnace noises and what they might mean. If your furnace is making a strange noise, our friendly heating professionals are here to fix the problem with the best furnace repair in Circleville, Ohio.

1. Furnace Making a Banging Noise

You might have an urgent problem on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it might signal there could be a few problems. These include gas building up in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system turns grimy over time, so that’s why it’s critical to book routine furnace maintenance with Stephen Hurst Pack Heating and Cooling. One of the tasks our technicians complete during this appointment is clean your furnace’s burners. When this part gets grubby, you may hear your furnace making a loud rumbling noise when ignition is delayed. The resulting gas buildup might break your furnace’s heat exchanger, where natural gas changes into warmth. Any breaks in it can discharge carbon monoxide, which is regularly emitted outside. This toxic gas can be fatal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Stephen Hurst Pack Heating and Cooling urges you to turn it off and reaching us at 740-474-5940. Excessive natural gas in your furnace or a cracked heat exchanger are critical troubles that require prompt repairs.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to deliver hot air around your home. If the ductwork wasn’t designed right or is aging, it can be noisy when your furnace runs. This can be the issue if your furnace makes a banging noise when it shuts off. Contact Stephen Hurst Pack Heating and Cooling at 740-474-5940 and we’ll determine the problem.

2. Furnace Makes a Buzzing Sound

If you notice your furnace making a buzzing noise, don’t wait to call us. A buzzing sound often means there’s an electrical problem, 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 isn’t tight enough, you might notice a low humming noise in the furnace when off. Your furnace also has a blower motor, which moves warm or chilly air around your rooms, and a capacitor, which turns on 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 the result of something small, like an unsecure screw, or something serious, like a broken piece. In either case, we urge you to shut your furnace off and getting in touch with our heating pros at 740-474-5940 for help.

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s trying to tell you it requires 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 lubricated. We know that maintenance sometimes slips your mind, but our professionals can get your furnace running quietly again rapidly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re hearing your furnace making a whistling noise, it’s frequently the result of an air leak in your ductwork. You might also hear whistling while the furnace is running if a floor vent isn’t secure. If you’ve looked at your vents but are still sensing noise, Stephen Hurst Pack Heating and Cooling can provide support. It’s critical to get loose ductwork taken care of quickly, because it can make comfort troubles in your house and drive up your utility bills.

6. Furnace Making a Grinding Noise

It’s not an encouraging sign if you hear your furnace making a grinding noise. This metal-on-metal noise typically means there’s a problem with your furnace’s blower. Shut down your furnace off promptly and contact our pros at 740-474-5940 for support.

When you’re getting a strange noise from your furnace, Stephen Hurst Pack Heating and Cooling is available to support you. Contact us at 740-474-5940 to book your furnace repair appointment today.