When your furnace is running correctly, it should deliver heat without generating too much noise. While it’s normal to notice your furnace making noise as it turns on, other noises are signaling your furnace should get immediate professional support.

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

1. Furnace Makes a Banging Sound

You may have an urgent situation on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it can indicate there could be a few problems. These range from gas accumulating in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system turns grimy over time, so that’s why it’s important to schedule routine furnace maintenance with Air Temperature Control. One of the tasks our pros do during this appointment is clean your furnace’s burners. When this piece gets grubby, you might hear your furnace making a loud rumbling noise if ignition takes more time. The following gas buildup may break your furnace’s heat exchanger, where natural gas transforms into heat. Any breaks in it can leak carbon monoxide, which is regularly released outside. This toxic gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Air Temperature Control advises turning it off and calling us at 478-202-3170. Significant natural gas in your furnace or a cracked heat exchanger are serious problems that should get prompt attention.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to provide heated air across your home. If the ductwork wasn’t installed right or is getting dated, it can make a lot of noise when your furnace is on. This can be the case if your furnace makes a banging noise when it shuts off. Get in touch with Air Temperature Control at 478-202-3170 and we’ll pinpoint the problem.

2. Furnace Buzzes Constantly

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

Your furnace uses an internal transformer to work on the proper voltage. If wires or the box needs to be tightened, you may notice a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves hot or cold air across your house, and a capacitor, which triggers 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 due to something minor, like an unfastened screw, or something critical, like a broken piece. In either case, we recommend shutting off your furnace and calling our heating pros at 478-202-3170 for help.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s trying to alert you it requires some TLC. If you’ve skipped furnace maintenance the last couple of years, belts could be worn out or a bearing could need to be lubed. We are aware that maintenance often slips your mind, but our techs can get your furnace running quietly again rapidly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re detecting your furnace making a whistling noise, it’s likely because of an air leak in your ductwork. You could also notice whistling while the furnace is working if a floor vent isn’t secure. If you’ve looked at your vents but are still noticing whistling, Air Temperature Control can provide support. It’s essential to get loose ductwork fixed without delay, since it can create comfort issues in your home and drive up your heating costs.

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 an issue with your furnace’s blower. Turn off your furnace off promptly and call our professionals at 478-202-3170 for support.

When you’re hearing a weird noise from your furnace, Air Temperature Control is available to provide assistance. Contact us at 478-202-3170 to schedule your furnace repair appointment right away.