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

When your furnace is operating properly, it should deliver warm air without making too much disruption. While it’s expected to hear your furnace making noise as it turns on, other sounds are indicating your furnace requires immediate professional help.

Here are some of the most frequent furnace noises and what they could mean. If your furnace is making a strange noise, our friendly heating specialists are here to help with the best furnace repair in Oxford.

1. Furnace Making a Banging Noise

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

Banging Sounds Coming from Your Furnace

Your heating system turns dirty over time, so that’s why it’s essential to set routine furnace maintenance with Franklin's Heating & Air Conditioning, Inc.. One of the tasks our professionals do during this appointment is clean your furnace’s burners. When this component gets grimy, you could hear your furnace making a loud rumbling noise if ignition takes longer than normal. The resulting gas buildup might crack your furnace’s heat exchanger, where natural gas turns into warm air. Any cracks in it can emit carbon monoxide, which is normally vented outside. This dangerous gas can be lethal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Franklin's Heating & Air Conditioning, Inc. urges you to turn it off and contacting us at 662-281-1231. Significant natural gas in your furnace or a fractured heat exchanger are critical problems that require prompt attention.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to provide warm air throughout your home. If the ductwork wasn’t put in properly or is aging, it can be noisy when your furnace is on. This can be the case if your furnace makes a banging noise when it shuts off. Call Franklin's Heating & Air Conditioning, Inc. at 662-281-1231 and we’ll pinpoint 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 depends on an internal transformer to work on the proper voltage. If wires or the box is loose, you might notice a low humming noise in the furnace when off. Your furnace also has a blower motor, which sends hot or cold air across your house, and a capacitor, which starts the motor. If either of these components are fading, they will buzz when the furnace starts.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it can be due to something minor, like an unfastened screw, or something major, like a broken component. In either case, we urge you to shut your furnace off and getting in touch with our heating specialists at 662-281-1231 for help.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s making an effort to tell you it needs some TLC. If you’ve forgotten furnace maintenance the last couple of years, belts could be dilapidated or a bearing could need to be lubed. We are aware that maintenance often slips your mind, but our technicians can get your furnace running quietly again fast.

5. Furnace Making a Whistling Noise

When you’re detecting your furnace making a whistling noise, it’s likely the result 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 secure. If you’ve looked at your vents but are still hearing noise, Franklin's Heating & Air Conditioning, Inc. can provide support. It’s critical to get loose ductwork repaired without delay, because it can create comfort issues in your house and drive up your utility expenses.

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 often means there’s trouble with your furnace’s blower. Switch off your furnace off now and contact our pros at 662-281-1231 for assistance.

When you’re noticing an atypical noise from your furnace, Franklin's Heating & Air Conditioning, Inc. is available to help. Contact us at 662-281-1231 to book your furnace repair appointment today.

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