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Banging, Screeching and Rattling: What 6 Common Furnace Noises Signify

When your furnace is working like it should, it should deliver warmth without making too much noise. While it’s common to hear your furnace making noise as it starts up, other noises are indicating your furnace should get immediate professional help.

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

1. Furnace Making a Banging Noise

You could have a critical problem on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it may mean there could be several problems. These range from gas accumulating in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system gets grimy over time, so that’s why it’s important to schedule routine furnace maintenance with Brandon Heating and Plumbing. One of the things our pros perform during this appointment is clean your furnace’s burners. When this component gets grimy, you might hear your furnace making a loud rumbling noise after ignition is delayed. The ensuing gas buildup may break your furnace’s heat exchanger, where natural gas transforms into heat. Any cracks in it can leak carbon monoxide, which is ordinarily released outdoors. This dangerous gas can be lethal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Brandon Heating and Plumbing recommends turning it off and calling us at 204-728-0180. Too much natural gas in your furnace or a ruptured heat exchanger are serious problems that should get prompt repairs.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to provide hot air around your home. If the ductwork wasn’t designed right or is getting dated, it can make a lot of noise when your furnace is heating. This could be the problem if your furnace makes a banging noise when it shuts off. Contact Brandon Heating and Plumbing at 204-728-0180 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

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

Your furnace relies on an internal transformer to work on the right voltage. If wires or the box needs to be tightened, you might detect a low humming noise in the furnace when off. Your furnace also works with a blower motor, which sends heated or chilly air around your house, and a capacitor, which starts the motor. If either of these pieces are going out, 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 little, like an unfastened screw, or something critical, like a broken part. In either case, we urge you to shut your furnace off and contacting our heating professionals at 204-728-0180 for assistance.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s trying to get your attention it needs some TLC. If you’ve skipped furnace maintenance recently, belts could be worn out or a bearing may need to be greased. We are aware that maintenance sometimes slips your mind, but our technicians can get your furnace running quietly again rapidly.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s frequently because of an air leak in your ductwork. You might also be aware of whistling while the furnace is operating if a floor vent isn’t tight. If you’ve checked your vents but are still noticing whistling, Brandon Heating and Plumbing can assist you. It’s important to get loose ductwork fixed without delay, because it can result in comfort problems in your home and drive up your energy costs.

6. Furnace Making a Grinding Noise

It’s not a good sign if you detect your furnace making a grinding noise. This metal-on-metal noise typically means there’s an issue with your furnace’s blower. Switch off your furnace off now and contact us at 204-728-0180 for assistance.

When you’re noticing a weird noise from your furnace, Brandon Heating and Plumbing is here to help. Contact us at 204-728-0180 to book your furnace repair appointment now.

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