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

When your furnace is running correctly, it should provide warm air without creating too much sound. While it’s normal to catch your furnace making noise as it starts up, other noises are signaling your furnace needs immediate professional assistance.

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

1. Furnace Making a Banging Noise

You may have a critical problem on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it may signal there could be a few problems. These include gas accumulating in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system becomes grimy over the years, so that’s why it’s essential to book routine furnace maintenance with Turner Brothers Heating & Air Conditioning. One of the tasks our techs do during this work is clean your furnace’s burners. When this piece gets grubby, you could hear your furnace making a loud rumbling noise if ignition is delayed. The resulting gas buildup may break your furnace’s heat exchanger, where natural gas turns into heat. Any cracks in it can leak carbon monoxide, which is regularly emitted outdoors. This hazardous gas can be lethal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Turner Brothers Heating & Air Conditioning urges you to turn it off and reaching us at 912-208-2470. Excessive natural gas in your furnace or a cracked heat exchanger are dangerous problems that require immediate attention.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to deliver heated air throughout your house. If the ductwork wasn’t designed right or is getting dated, it can be noisy when your furnace is heating. This can be the problem if your furnace makes a banging noise when it shuts off. Contact Turner Brothers Heating & Air Conditioning at 912-208-2470 and we’ll determine the problem.

2. Furnace Making a Buzzing Noise

If you observe your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound typically indicates 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 isn’t tight enough, you could hear a low humming noise in the furnace when off. Your furnace also has a blower motor, which sends heated or chilly air throughout your home, and a capacitor, which turns on the motor. If either of these pieces are fading, they will buzz when the furnace starts.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it could be related to something minor, like an unfastened screw, or something serious, like a broken component. In either case, we advise shutting your furnace off and calling our heating professionals at 912-208-2470 for assistance.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s attempting to tell you it needs some TLC. If you’ve skipped furnace maintenance the last couple of years, belts could be worn out or a bearing may need to be lubricated. We know that maintenance sometimes slips your mind, but our professionals can get your furnace running quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re hearing your furnace making a whistling noise, it’s frequently due to an air leak in your ductwork. You might also be aware of whistling while the furnace is operating if a floor vent is loose. If you’ve checked your vents but are still noticing whistling, Turner Brothers Heating & Air Conditioning can provide support. It’s critical to get loose ductwork fixed without delay, because it can make comfort troubles in your house and inflate your energy bills.

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 frequently means there’s a problem with your furnace’s blower. Switch off your furnace off promptly and contact us at 912-208-2470 for assistance.

When you’re hearing a weird noise from your furnace, Turner Brothers Heating & Air Conditioning is here to provide assistance. Contact us at 912-208-2470 to schedule your furnace repair appointment today.

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