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

When your furnace is operating like it should, it should give warmth without creating too much noise. While it’s normal to notice your furnace making noise as it begins running, other noises are signaling your furnace needs immediate professional assistance.

Here are some of the most frequent furnace noises and what they can be signaling. If your furnace is making a weird noise, our friendly heating specialists are here to assist with the best furnace repair in Denton.

1. Furnace Making a Banging Noise

You may have a critical issue on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it may indicate there could be several problems. These involve gas building up in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system turns filthy over time, so that’s why it’s important to set yearly furnace maintenance with Oak Point Heating and Air LLC. One of the things our technicians perform during this service is clean your furnace’s burners. When this part gets dirty, you could hear your furnace making a loud rumbling noise when ignition takes more time. The ensuing gas buildup might break your furnace’s heat exchanger, where natural gas changes into warm air. Any cracks in it can emit carbon monoxide, which is normally vented away from your home. This hazardous gas can be fatal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Oak Point Heating and Air LLC recommends turning it off and calling us at 940-202-1202. Excessive natural gas in your furnace or a fractured heat exchanger are serious problems that necessitate immediate attention.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to move warm air across your home. If the ductwork wasn’t installed properly or is getting dated, it can be noisy when your furnace is on. This might be the problem if your furnace makes a banging noise when it shuts off. Get in touch with Oak Point Heating and Air LLC at 940-202-1202 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

If you notice your furnace making a buzzing noise, don’t wait to call us. A buzzing sound often 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 isn’t tight enough, you may hear a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves warm or cold air throughout your home, and a capacitor, which starts the motor. If either of these components are going out, they will buzz when the furnace switches on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it could be the result of something minor, like a loose screw, or something serious, like a broken piece. In either case, we urge you to shut your furnace off and getting in touch with our heating professionals at 940-202-1202 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 tell you it requires some TLC. If you’ve neglected furnace maintenance recently, belts could be dilapidated or a bearing could need to be greased. We are aware that maintenance sometimes slips your mind, but our technicians can get your furnace running quietly again fast.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s likely due to an air leak in your ductwork. You may also be aware of whistling while the furnace is working if a floor vent isn’t tight. If you’ve examined your vents but are still hearing whistling, Oak Point Heating and Air LLC can provide support. It’s essential to get loose ductwork fixed without delay, since it can make comfort problems in your residence and drive up your energy expenses.

6. Furnace Making a Grinding Noise

It’s not a positive sign if you notice your furnace making a grinding noise. This metal-on-metal racket typically means there’s trouble with your furnace’s blower. Switch off your furnace off now and reach our pros at 940-202-1202 for help.

When you’re noticing a strange noise from your furnace, Oak Point Heating and Air LLC is available to help. Contact us at 940-202-1202 to schedule your furnace repair appointment now.

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