When your furnace is working properly, it should provide heat without generating too much noise. While it’s expected to hear your furnace making noise as it turns on, other disruptions are signaling your furnace should get immediate professional assistance.

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

1. Furnace Making a Banging Noise

You could have an urgent problem on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it can mean there could be a couple of problems. These involve gas building up in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system gets filthy as time passes, so that’s why it’s essential to book routine furnace maintenance with AC Sales. One of the jobs our pros perform during this work is clean your furnace’s burners. When this component gets grimy, you could hear your furnace making a loud rumbling noise when ignition is delayed. The subsequent gas buildup might break your furnace’s heat exchanger, where natural gas turns into warm air. Any cracks in it can discharge carbon monoxide, which is normally emitted outside. This hazardous gas can be deadly in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, AC Sales advises turning it off and contacting us at (337) 234-2345. Too much natural gas in your furnace or a fractured heat exchanger are dangerous problems that should get immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to move warm air around your house. If the ductwork wasn’t designed correctly or is aging, it can be loud when your furnace is on. This could be the issue if your furnace makes a banging noise when it shuts off. Call AC Sales at (337) 234-2345 and we’ll determine 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 frequently indicates an electrical issue, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to operate 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 moves hot or cold air across your house, and a capacitor, which turns on the motor. If either of these parts are failing, they will buzz when the furnace switches on.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it can be the result of something little, like an unsecure screw, or something serious, like a broken piece. In either case, we recommend shutting off your furnace and contacting our heating professionals at (337) 234-2345 for help.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s trying to get your attention it could use some TLC. If you’ve forgotten furnace maintenance the last couple of years, belts could be worn down or a bearing might need to be lubed. We know that maintenance frequently slips your mind, but our pros can get your furnace operating quietly again rapidly.

5. Furnace Making a Whistling Noise

When you’re hearing your furnace making a whistling noise, it’s frequently because of an air leak in your ductwork. You may also notice whistling while the furnace is working if a floor vent isn’t secure. If you’ve examined your vents but are still noticing noise, AC Sales can provide support. It’s critical to get loose ductwork fixed fast, since it can result in comfort troubles in your house and inflate your energy bills.

6. Furnace Making a Grinding Noise

It’s not a good sign if you notice your furnace making a grinding noise. This metal-on-metal sound typically means there’s an issue with your furnace’s blower. Shut down your furnace off promptly and reach us at (337) 234-2345 for help.

When you’re getting an atypical noise from your furnace, AC Sales is available to help. Contact us at (337) 234-2345 to schedule your furnace repair appointment right away.