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

When your furnace is working correctly, it should give warm air without making too much noise. While it’s common to hear your furnace making noise as it turns on, other noises are signaling your furnace needs immediate professional help.

Here are some of the most reported furnace noises and what they could mean. If your furnace is making an atypical noise, our friendly heating specialists are here to help with the best furnace repair in Ronkonkoma.

1. Furnace Making a Banging Noise

You may 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 indicate there could be a few problems. These involve gas building up in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system gets dirty over the years, so that’s why it’s critical to book yearly furnace maintenance with Cool Power LLC . One of the things our professionals complete during this service is clean your furnace’s burners. When this piece gets dirty, you may hear your furnace making a loud rumbling noise if ignition is delayed. The following gas buildup can fracture your furnace’s heat exchanger, where natural gas changes into warm air. Any cracks in it can discharge carbon monoxide, which is normally emitted outside. This hazardous gas can be fatal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Cool Power LLC urges you to turn it off and reaching us at 631-246-4029. Too much natural gas in your furnace or a fractured heat exchanger are hazardous troubles that require prompt service.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to move warm air around your home. If the ductwork wasn’t designed properly or is aging, it can be loud when your furnace is on. This might be the problem if your furnace makes a banging noise when it shuts off. Call Cool Power LLC at 631-246-4029 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

If you observe your furnace making a buzzing noise, don’t wait to call us. A buzzing sound usually means 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 could detect a low humming noise in the furnace when off. Your furnace also uses a blower motor, which sends heated or chilly air across your residence, and a capacitor, which turns on the motor. If either of these pieces 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 could be due to something little, like an unfastened screw, or something serious, like a broken part. In either case, we advise shutting your furnace off and calling our heating pros at 631-246-4029 for support.

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 skipped furnace maintenance the past few years, belts could be dilapidated or a bearing could need to be lubed. We know that maintenance often slips your mind, but our techs can get your furnace operating quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re hearing your furnace making a whistling noise, it’s likely the result of an air leak in your ductwork. You may also notice whistling while the furnace is on if a floor vent isn’t tight. If you’ve looked at your vents but are still noticing whistling, Cool Power LLC can help. It’s important to get loose ductwork repaired fast, as it can make comfort troubles in your home and drive up your gas bills.

6. Furnace Making a Grinding Noise

It’s not an encouraging 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 now and call our professionals at 631-246-4029 for assistance.

When you’re getting an uncommon noise from your furnace, Cool Power LLC is ready to help. Contact us at 631-246-4029 to request your furnace repair appointment now.

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