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

When your furnace is running like it should, it should give heat without creating too much disruption. While it’s normal to hear your furnace making noise as it starts up, other sounds are signaling your furnace should get immediate professional assistance.

Here are some of the most common furnace noises and what they might mean. If your furnace is making a strange noise, our friendly heating professionals are here to fix the problem with the best furnace repair in Booneville.

1. Furnace Making a Banging Noise

You may have an urgent 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 several problems. These include gas building up in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system gets filthy over time, so that’s why it’s essential to schedule annual furnace maintenance with Booneville Heating & Cooling LLC. One of the things our pros perform during this service is clean your furnace’s burners. When this part gets grimy, you could hear your furnace making a loud rumbling noise when ignition is delayed. The subsequent gas buildup may fracture your furnace’s heat exchanger, where natural gas transforms into warm air. Any breaks in it can leak carbon monoxide, which is ordinarily emitted outside. This hazardous gas can be deadly in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Booneville Heating & Cooling LLC urges you to turn it off and calling us at 662-269-8716. Significant natural gas in your furnace or a ruptured heat exchanger are serious troubles that necessitate prompt attention.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to move heated air across your home. If the ductwork wasn’t installed right or is aging, it can be loud when your furnace is heating. This may be the problem if your furnace makes a banging noise when it shuts off. Get in touch with Booneville Heating & Cooling LLC at 662-269-8716 and we’ll pinpoint the problem.

2. Furnace Making a Buzzing Noise

If you hear your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound often is telling you there’s an electrical issue, like with its transformer, blower motor or capacitor.

Your furnace relies on an internal transformer to work on the proper voltage. If wires or the box isn’t tight enough, you may notice a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves warm or cooled air across your home, and a capacitor, which starts the motor. If either of these components are failing, 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 little, like a loose screw, or something serious, like a broken part. In either case, we recommend shutting off your furnace and contacting our heating pros at 662-269-8716 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s attempting to get your attention it requires some TLC. If you’ve neglected furnace maintenance the past few years, belts could be worn out or a bearing might need to be greased. We realize that maintenance sometimes slips your mind, but our techs can get your furnace running quietly again rapidly.

5. Furnace Making a Whistling Noise

When you’re detecting your furnace making a whistling noise, it’s typically because of an air leak in your ductwork. You could also notice whistling while the furnace is on if a floor vent is loose. If you’ve checked your vents but are still noticing whistling, Booneville Heating & Cooling LLC can provide support. It’s critical to get loose ductwork taken care of fast, since it can result in comfort problems in your home and inflate your gas expenses.

6. Furnace Making a Grinding Noise

It’s not a positive sign if you hear 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 immediately and contact our professionals at 662-269-8716 for help.

When you’re getting an atypical noise from your furnace, Booneville Heating & Cooling LLC is available to support you. Contact us at 662-269-8716 to book your furnace repair appointment right away.

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