Banging, Screeching and Rattling: What 6 Ordinary Furnace Noises Mean

October 13, 2020

When your furnace is operating correctly, it should deliver warmth without creating too much sound. While it’s expected to hear your furnace making noise as it turns on, other disruptions are indicating your furnace requires immediate professional support.

Here are some of the most frequent furnace noises and what they might mean. If your furnace is making an odd noise, our friendly heating pros are here to fix the problem with the best furnace repair in Shelby.

1. Furnace Making a Banging Noise

You might 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 several problems. These include gas increasing in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system becomes filthy over time, so that’s why it’s critical to schedule annual furnace maintenance with Hopper Heating and Air. One of the jobs our techs complete during this work is clean your furnace’s burners. When this component gets grubby, you might hear your furnace making a loud rumbling noise if ignition takes more time. The resulting gas buildup can break your furnace’s heat exchanger, where natural gas transforms into warmth. Any breaks in it can discharge carbon monoxide, which is ordinarily released outside. This hazardous gas can be lethal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Hopper Heating and Air advises turning it off and reaching us at 704-233-7363. Excessive natural gas in your furnace or a broken heat exchanger are hazardous issues that require prompt attention.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to move hot air throughout your residence. If the ductwork wasn’t put in right or is aging, it can be loud when your furnace is on. This could be the issue if your furnace makes a banging noise when it shuts off. Contact Hopper Heating and Air at 704-233-7363 and we’ll determine the problem.

2. Furnace Making a Buzzing Noise

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

Your furnace uses an internal transformer to work on the right voltage. If wires or the box isn’t tight enough, you might hear a low humming noise in the furnace when off. Your furnace also uses a blower motor, which sends warm or cooled air around your home, and a capacitor, which turns on the motor. If either of these parts are fading, they will buzz when the furnace switches on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it can be due to something little, like a loose screw, or something critical, like a broken component. In either case, we urge you to shut your furnace off and getting in touch with our heating specialists at 704-233-7363 for help.

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 get your attention it requires some TLC. If you’ve neglected furnace maintenance the last couple of years, belts could be dilapidated or a bearing may need to be lubricated. We know that maintenance frequently slips your mind, but our technicians can get your furnace heating quietly again rapidly.

5. Furnace Making a Whistling Noise

When you’re detecting your furnace making a whistling noise, it’s typically the result of an air leak in your ductwork. You could also notice whistling while the furnace is working if a floor vent isn’t tight. If you’ve checked your vents but are still noticing sound, Hopper Heating and Air can assist you. It’s critical to get loose ductwork taken care of quickly, since it can result in comfort troubles in your residence 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 racket often means there’s a problem with your furnace’s blower. Switch off your furnace off instantly and contact us at 704-233-7363 for help.

When you’re noticing a weird noise from your furnace, Hopper Heating and Air is here to provide assistance. Contact us at 704-233-7363 to request your furnace repair appointment right away.