When your furnace is operating properly, it should deliver warm air without creating too much sound. While it’s normal to hear your furnace making noise as it turns on, other disruptions are signaling your furnace should get immediate professional help.

Here are some of the most reported furnace noises and what they can be signaling. If your furnace is making an odd noise, our friendly heating professionals are here to fix the problem with the best furnace repair in Columbus, Ohio.

1. Furnace Makes Banging or Knocking Sounds

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

Banging Sounds Coming from Your Furnace

Your heating system turns filthy over time, so that’s why it’s critical to book seasonal furnace maintenance with Classic Air. One of the jobs our pros do during this work is clean your furnace’s burners. When this piece gets grimy, you could hear your furnace making a loud rumbling noise when ignition takes longer than normal. The following gas buildup can fracture your furnace’s heat exchanger, where natural gas turns into warmth. Any fractures in it can leak carbon monoxide, which is ordinarily vented away from your home. This toxic gas can be fatal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Classic Air advises turning it off and reaching us at 614-210-3041. Significant natural gas in your furnace or a cracked heat exchanger are dangerous problems that necessitate immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to deliver warm air throughout your home. If the ductwork wasn’t installed correctly or is getting dated, it can be loud when your furnace runs. This might be the issue if your furnace makes a banging noise when it shuts off. Contact Classic Air at 614-210-3041 and we’ll pinpoint the problem.

2. Furnace Makes a Buzzing Sound

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

Your furnace relies on an internal transformer to operate on the proper voltage. If wires or the box needs to be tightened, you could hear a low humming noise in the furnace when off. Your furnace also has a blower motor, which moves heated or cold air throughout your house, and a capacitor, which triggers the motor. If either of these components are fading, they will buzz when the furnace starts.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it may be the result of something minor, like an unfastened screw, or something major, like a broken piece. In either case, we recommend shutting off your furnace and contacting our heating specialists at 614-210-3041 for assistance.

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 making an effort to alert you it requires some TLC. If you’ve skipped furnace maintenance the past few years, belts could be worn out or a bearing could need to be lubed. We know that maintenance sometimes slips your mind, but our professionals can get your furnace heating quietly again quickly.

5. Furnace Whistles

When you’re detecting your furnace making a whistling noise, it’s typically the result of an air leak in your ductwork. You may also be aware of whistling while the furnace is operating if a floor vent is loose. If you’ve checked your vents but are still noticing sound, Classic Air can assist you. It’s critical to get loose ductwork repaired fast, as it can make comfort troubles in your home and inflate your heating expenses.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not a positive sign if you detect your furnace making a grinding noise. This metal-on-metal sound typically means there’s trouble with your furnace’s blower. Switch off your furnace off instantly and reach our professionals at 614-210-3041 for support.

When you’re getting an atypical noise from your furnace, Classic Air is available to help. Contact us at 614-210-3041 to book your furnace repair appointment right away.