When your furnace is working like it should, it should deliver heat without making too much noise. While it’s expected to hear your furnace making noise as it turns on, other disruptions are showing your furnace requires immediate professional help.

Here are some of the most common furnace noises and what they might be signaling. If your furnace is making a weird noise, our friendly heating pros are here to assist with the best furnace repair in South Beloit and Belvidere, Illinois.

1. Furnace Makes Banging or Knocking Sounds

You might have an urgent issue 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 involve gas increasing in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system gets dirty over the years, so that’s why it’s essential to schedule annual furnace maintenance with Fleming Heating & Air Conditioning Inc. One of the things our professionals do during this work is clean your furnace’s burners. When this piece gets dirty, you may hear your furnace making a loud rumbling noise after ignition takes more time. The subsequent gas buildup may break your furnace’s heat exchanger, where natural gas turns into warm air. Any cracks in it can emit carbon monoxide, which is ordinarily vented away from your home. This toxic gas can be deadly in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Fleming Heating & Air Conditioning Inc urges you to turn it off and calling us at 877-389-2465. Excessive natural gas in your furnace or a broken heat exchanger are serious troubles that necessitate immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to deliver warm air across your residence. If the ductwork wasn’t put in properly or is aging, it can be loud when your furnace runs. This can be the problem if your furnace makes a banging noise when it shuts off. Call Fleming Heating & Air Conditioning Inc at 877-389-2465 and we’ll determine the problem.

2. Furnace Making a Buzzing Noise

If you observe your furnace making a buzzing noise, don’t wait to call us. A buzzing sound typically means there’s an electrical situation, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to work on the right voltage. If wires or the box isn’t tight enough, you may detect a low humming noise in the furnace when off. Your furnace also uses a blower motor, which moves heated or chilly air across your space, and a capacitor, which starts the motor. If either of these pieces are fading, they will buzz when the furnace starts.

3. Furnace Rattles

If your furnace is making a rattling noise, it may be the result of something small, like an unfastened screw, or something critical, like a broken part. In either case, we recommend shutting off your furnace and getting in touch with our heating professionals at 877-389-2465 for support.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s making an effort to alert you it needs some TLC. If you’ve forgotten furnace maintenance the last couple of years, belts could be worn out or a bearing may need to be lubed. We are aware that maintenance often slips your mind, but our technicians can get your furnace heating quietly again fast.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re noticing your furnace making a whistling noise, it’s likely the result of an air leak in your ductwork. You may also be aware of whistling while the furnace is running if a floor vent isn’t tight. If you’ve looked at your vents but are still sensing noise, Fleming Heating & Air Conditioning Inc can assist you. It’s essential to get loose ductwork taken care of without delay, since it can make comfort problems in your house and drive up your gas bills.

6. Furnace Making a Grinding Noise

It’s not an encouraging sign if you detect your furnace making a grinding noise. This metal-on-metal noise usually means there’s an issue with your furnace’s blower. Switch off your furnace off instantly and reach our pros at 877-389-2465 for support.

When you’re getting a strange noise from your furnace, Fleming Heating & Air Conditioning Inc is here to support you. Contact us at 877-389-2465 to schedule your furnace repair appointment right away.