When your furnace is operating properly, it should provide warm air without generating too much disruption. While it’s expected to notice your furnace making noise as it turns on, other noises are signaling your furnace needs immediate professional help.

Here are some of the most reported furnace noises and what they can be signaling. If your furnace is making a weird noise, our friendly heating professionals are here to fix the problem with the best furnace repair in Norco and St. Charles Parish, Louisiana.

1. Furnace Makes a Banging Sound

You may have a serious issue on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it might mean there could be several problems. These range from gas building up 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 important to set seasonal furnace maintenance with Mayeuxs AC & Heating. One of the things our techs perform during this work is clean your furnace’s burners. When this part gets dirty, you could hear your furnace making a loud rumbling noise after ignition takes longer than normal. 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 normally released outdoors. This toxic gas can be deadly in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Mayeuxs AC & Heating urges you to turn it off and contacting us at (985) 764-2426. Significant natural gas in your furnace or a cracked heat exchanger are hazardous issues that require immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to move heated air throughout your residence. If the ductwork wasn’t designed right or is aging, it can be noisy when your furnace runs. This may be the issue if your furnace makes a banging noise when it shuts off. Get in touch with Mayeuxs AC & Heating at (985) 764-2426 and we’ll determine the problem.

2. Furnace Makes a Buzzing Sound

If you observe your furnace making a buzzing noise, don’t wait to call us. A buzzing sound typically means there’s an electrical problem, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to run on the correct voltage. If wires or the box needs to be tightened, you might hear a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves hot or cold air across your home, and a capacitor, which starts the motor. If either of these components are fading, they will buzz when the furnace turns on.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it can be related to something minor, like a loose screw, or something critical, like a broken part. In either case, we advise shutting your furnace off and contacting our heating specialists at (985) 764-2426 for assistance.

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s trying to alert you it needs some TLC. If you’ve forgotten furnace maintenance the past few years, belts could be worn down or a bearing could need to be lubricated. We realize that maintenance often slips your mind, but our techs can get your furnace operating quietly again fast.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re noticing your furnace making a whistling noise, it’s typically the result of an air leak in your ductwork. You may also notice whistling while the furnace is on if a floor vent isn’t secure. If you’ve examined your vents but are still noticing sound, Mayeuxs AC & Heating can help. It’s important to get loose ductwork repaired without delay, as it can create comfort troubles in your house and increase your gas costs.

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 noise frequently means there’s trouble with your furnace’s blower. Shut down your furnace off right away and contact us at (985) 764-2426 for help.

When you’re noticing an uncommon noise from your furnace, Mayeuxs AC & Heating is ready to support you. Contact us at (985) 764-2426 to book your furnace repair appointment right away.