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

When your furnace is working properly, it should provide heat without making too much disruption. While it’s normal to hear your furnace making noise as it starts up, other sounds are signaling your furnace requires immediate professional assistance.

Here are some of the most reported furnace noises and what they can be indicating. If your furnace is making a strange noise, our friendly heating professionals are here to fix the problem with the best furnace repair in Middle Georgia.

1. Furnace Making a Banging Noise

You could 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 can mean there could be a few problems. These range from gas increasing in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system gets grimy as time passes, so that’s why it’s critical to set routine furnace maintenance with Air Concepts of Middle Georgia. One of the things our professionals do during this work is clean your furnace’s burners. When this component gets grubby, you might hear your furnace making a loud rumbling noise when ignition takes longer than normal. The ensuing gas buildup may break your furnace’s heat exchanger, where natural gas changes into heat. Any breaks in it can emit carbon monoxide, which is regularly emitted outside. This dangerous gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Air Concepts of Middle Georgia recommends turning it off and calling us at 478-200-5689. Significant natural gas in your furnace or a fractured heat exchanger are critical problems that should get fast attention.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to move warm air across your house. If the ductwork wasn’t installed properly or is getting dated, it can make a lot of noise when your furnace runs. This might be the problem if your furnace makes a banging noise when it shuts off. Get in touch with Air Concepts of Middle Georgia at 478-200-5689 and we’ll pinpoint 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 operate on the correct 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 cold air across your home, and a capacitor, which starts 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 little, like a loose screw, or something serious, like a broken part. In either case, we recommend shutting off your furnace and getting in touch with our heating specialists at 478-200-5689 for assistance.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s making an effort to alert you it needs some TLC. If you’ve skipped furnace maintenance the past few years, belts could be worn down or a bearing might need to be lubed. We realize that maintenance often slips your mind, but our techs can get your furnace heating quietly again rapidly.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s typically because of an air leak in your ductwork. You might also hear whistling while the furnace is running if a floor vent isn’t tight. If you’ve looked at your vents but are still sensing noise, Air Concepts of Middle Georgia can assist you. It’s essential to get loose ductwork taken care of fast, as it can create comfort problems in your house and increase your utility expenses.

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 trouble with your furnace’s blower. Switch off your furnace off immediately and call our professionals at 478-200-5689 for support.

When you’re hearing an atypical noise from your furnace, Air Concepts of Middle Georgia is available to help. Contact us at 478-200-5689 to request your furnace repair appointment right away.

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