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

When your furnace is running like it should, it should give warm air without making too much noise. While it’s common to catch your furnace making noise as it turns on, other disruptions are indicating your furnace requires immediate professional support.

Here are some of the most reported furnace noises and what they could be indicating. If your furnace is making a weird noise, our friendly heating specialists are here to fix the problem with the best furnace repair in Hattiesburg.

1. Furnace Making a Banging Noise

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

Banging Sounds Coming from Your Furnace

Your heating system becomes filthy over the years, so that’s why it’s important to schedule seasonal furnace maintenance with Oak Grove Heating & Air Conditioning. One of the things our professionals perform during this work is clean your furnace’s burners. When this part gets grubby, you may hear your furnace making a loud rumbling noise when ignition takes more time. The ensuing gas buildup might crack your furnace’s heat exchanger, where natural gas transforms into warm air. Any fractures in it can leak carbon monoxide, which is ordinarily released outside. This toxic gas can be deadly in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Oak Grove Heating & Air Conditioning advises turning it off and contacting us at 601-292-9763. Significant natural gas in your furnace or a cracked heat exchanger are dangerous problems that should get prompt repairs.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to deliver heated air around your house. If the ductwork wasn’t installed properly or is getting old, it can make a lot of noise when your furnace is heating. This can be the problem if your furnace makes a banging noise when it shuts off. Contact Oak Grove Heating & Air Conditioning at 601-292-9763 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 typically is telling you there’s an electrical issue, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to operate on the proper voltage. If wires or the box isn’t tight enough, you could detect a low humming noise in the furnace when off. Your furnace also uses a blower motor, which sends hot or chilly air around your home, and a capacitor, which starts the motor. If either of these components are failing, they will buzz when the furnace switches on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it can be the result of something small, like an unsecure screw, or something major, like a broken part. In either case, we advise shutting your furnace off and getting in touch with our heating specialists at 601-292-9763 for support.

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 alert you it requires some TLC. If you’ve skipped furnace maintenance recently, belts could be worn out or a bearing might need to be lubed. We realize that maintenance frequently slips your mind, but our professionals can get your furnace heating quietly again fast.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s typically the result of an air leak in your ductwork. You might also hear whistling while the furnace is running if a floor vent is loose. If you’ve looked at your vents but are still sensing whistling, Oak Grove Heating & Air Conditioning can assist you. It’s critical to get loose ductwork fixed without delay, because it can result in comfort troubles in your house and inflate your energy costs.

6. Furnace Making a Grinding Noise

It’s not an encouraging sign if you notice your furnace making a grinding noise. This metal-on-metal sound usually means there’s trouble with your furnace’s blower. Shut down your furnace off now and contact us at 601-292-9763 for help.

When you’re getting a strange noise from your furnace, Oak Grove Heating & Air Conditioning is here to provide assistance. Contact us at 601-292-9763 to request your furnace repair appointment now.

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