Banging, Screeching and Rattling: What Six Typical Furnace Noises Signify

When your furnace is working like it should, it should give heat without generating too much disruption. While it’s expected to notice your furnace making noise as it turns on, other noises are signaling your furnace needs immediate professional support.

Here are some of the most reported furnace noises and what they can mean. If your furnace is making a weird noise, our friendly heating professionals are here to fix the problem with the best furnace repair in Huntingburg, Indiana.

1. Furnace Making a Banging Noise

You could 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 can indicate there could be several problems. These range from gas building up in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system gets dirty as time passes, so that’s why it’s critical to set seasonal furnace maintenance with Dearing's Service & Solutions. One of the jobs our techs complete during this work is clean your furnace’s burners. When this component gets grimy, you could hear your furnace making a loud rumbling noise if ignition takes longer than normal. The following gas buildup might fracture your furnace’s heat exchanger, where natural gas transforms into warm air. Any fractures in it can discharge carbon monoxide, which is ordinarily released away from your home. This hazardous gas can be lethal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Dearing's Service & Solutions urges you to turn it off and reaching us at 812-200-5844. Significant natural gas in your furnace or a broken heat exchanger are critical problems that should get immediate attention.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to deliver heated air across your home. If the ductwork wasn’t installed right or is aging, it can be loud when your furnace is heating. This can be the issue if your furnace makes a banging noise when it shuts off. Contact Dearing's Service & Solutions at 812-200-5844 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

If you hear your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound often is telling you there’s an electrical issue, 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 detect a low humming noise in the furnace when off. Your furnace also works with a blower motor, which distributes hot or chilly air across your home, and a capacitor, which starts 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 may be the result of something minor, 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 specialists at 812-200-5844 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s making an effort to tell you it requires some TLC. If you’ve skipped furnace maintenance the past few years, belts could be worn down or a bearing could need to be lubricated. We know that maintenance frequently slips your mind, but our techs can get your furnace operating quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s typically because of an air leak in your ductwork. You might also notice whistling while the furnace is operating if a floor vent is loose. If you’ve examined your vents but are still noticing noise, Dearing's Service & Solutions can help. It’s essential to get loose ductwork taken care of quickly, because it can make comfort issues in your residence and increase your energy 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 trouble with your furnace’s blower. Shut down your furnace off instantly and contact us at 812-200-5844 for support.

When you’re getting a weird noise from your furnace, Dearing's Service & Solutions is available to support you. Contact us at 812-200-5844 to request your furnace repair appointment now.