Banging, Screeching and Rattling: What 6 Typical Furnace Noises Indicate

October 13, 2020

When your furnace is running correctly, it should deliver heat without creating too much sound. While it’s expected to notice your furnace making noise as it turns on, other disruptions are signaling your furnace needs immediate professional help.

Here are some of the most frequent furnace noises and what they can be indicating. If your furnace is making an odd noise, our friendly heating specialists are here to help with the best furnace repair in Moline.

1. Furnace Making a Banging Noise

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

Banging Sounds Coming from Your Furnace

Your heating system turns grimy as time passes, so that’s why it’s critical to schedule seasonal furnace maintenance with J.L. Brady Company LLC. One of the tasks our techs complete during this service is clean your furnace’s burners. When this part gets dirty, you could hear your furnace making a loud rumbling noise if ignition takes more time. The ensuing gas buildup might break your furnace’s heat exchanger, where natural gas turns into warmth. Any fractures in it can emit carbon monoxide, which is normally emitted outdoors. This toxic gas can be fatal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, J.L. Brady Company LLC advises turning it off and reaching us at 309-517-7511. Too much natural gas in your furnace or a ruptured heat exchanger are critical problems that require immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to provide hot air around your home. If the ductwork wasn’t designed correctly or is getting old, it can be loud when your furnace is on. This can be the problem if your furnace makes a banging noise when it shuts off. Get in touch with J.L. Brady Company LLC at 309-517-7511 and we’ll determine the problem.

2. Furnace Making a Buzzing Noise

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

Your furnace relies on an internal transformer to run on the right voltage. If wires or the box needs to be tightened, you may hear a low humming noise in the furnace when off. Your furnace also uses a blower motor, which distributes hot or cold air around your home, and a capacitor, which starts the motor. If either of these parts are going out, they will buzz when the furnace turns on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it might be due to something minor, like an unfastened screw, or something critical, like a broken part. In either case, we advise shutting your furnace off and getting in touch with our heating professionals at 309-517-7511 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s attempting to get your attention it requires some TLC. If you’ve skipped furnace maintenance the last couple of years, belts could be dilapidated or a bearing could need to be lubricated. We are aware that maintenance often slips your mind, but our technicians can get your furnace heating quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re hearing your furnace making a whistling noise, it’s frequently because 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 examined your vents but are still noticing whistling, J.L. Brady Company LLC can assist you. It’s critical to get loose ductwork repaired fast, as it can make comfort troubles in your home and inflate your gas costs.

6. Furnace Making a Grinding Noise

It’s not a positive 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. Turn off your furnace off right away and contact us at 309-517-7511 for support.

When you’re hearing an uncommon noise from your furnace, J.L. Brady Company LLC is ready to support you. Contact us at 309-517-7511 to schedule your furnace repair appointment right away.