When your furnace is working correctly, it should provide warm air without generating too much noise. While it’s common to notice your furnace making noise as it turns on, other disruptions are showing your furnace requires immediate professional support.

Here are some of the most reported furnace noises and what they might mean. If your furnace is making a strange noise, our friendly heating professionals are here to assist with the best furnace repair in Chester, Illinois.

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 mean there could be several problems. These range from gas increasing in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system becomes grimy over time, so that’s why it’s essential to book seasonal furnace maintenance with Korando Heating & Cooling, Inc.. One of the tasks our techs perform during this appointment is clean your furnace’s burners. When this piece gets dirty, you could hear your furnace making a loud rumbling noise after ignition is delayed. The following gas buildup may fracture your furnace’s heat exchanger, where natural gas transforms into warm air. Any cracks in it can emit carbon monoxide, which is regularly emitted away from your home. This dangerous gas can be deadly in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Korando Heating & Cooling, Inc. advises turning it off and calling us at 618-826-2151. Too much natural gas in your furnace or a ruptured heat exchanger are serious troubles that should get immediate repairs.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to provide hot air across your home. If the ductwork wasn’t designed right or is getting old, it can be loud when your furnace is on. This could be the case if your furnace makes a banging noise when it shuts off. Call Korando Heating & Cooling, Inc. at 618-826-2151 and we’ll pinpoint the problem.

2. Furnace Buzzes Constantly

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

Your furnace depends on an internal transformer to run on the proper voltage. If wires or the box isn’t tight enough, you could hear a low humming noise in the furnace when off. Your furnace also works with a blower motor, which sends heated or cooled air throughout your home, and a capacitor, which starts the motor. If either of these pieces 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 could be related to something little, like an unsecure screw, or something serious, like a broken component. In either case, we advise shutting your furnace off and getting in touch with our heating professionals at 618-826-2151 for help.

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s making an effort to get your attention it could use some TLC. If you’ve forgotten furnace maintenance the past few years, belts could be worn down or a bearing could need to be greased. We are aware that maintenance frequently slips your mind, but our techs can get your furnace heating quietly again fast.

5. Furnace Making a Whistling Noise

When you’re detecting your furnace making a whistling noise, it’s likely the result of an air leak in your ductwork. You might also notice whistling while the furnace is working if a floor vent isn’t tight. If you’ve examined your vents but are still sensing sound, Korando Heating & Cooling, Inc. can provide support. It’s essential to get loose ductwork fixed fast, as it can create comfort problems in your home and increase your utility bills.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not a good sign if you detect your furnace making a grinding noise. This metal-on-metal sound typically means there’s a problem with your furnace’s blower. Shut down your furnace off immediately and call our professionals at 618-826-2151 for support.

When you’re noticing an uncommon noise from your furnace, Korando Heating & Cooling, Inc. is here to provide assistance. Contact us at 618-826-2151 to book your furnace repair appointment today.