When your furnace is operating properly, it should deliver warmth without creating too much noise. While it’s expected to hear your furnace making noise as it begins running, other noises are indicating your furnace should get immediate professional help.

Here are some of the most common furnace noises and what they could be indicating. If your furnace is making a strange noise, our friendly heating pros are here to assist with the best furnace repair in Norco and St. Charles Parish, Louisiana.

1. Furnace Makes Banging or Knocking Sounds

You may have an urgent situation on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it might indicate there could be several problems. These range from gas building up in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system gets dirty over time, so that’s why it’s important to set annual furnace maintenance with Mayeuxs AC & Heating. One of the things our pros do during this service is clean your furnace’s burners. When this piece gets dirty, you could hear your furnace making a loud rumbling noise after ignition is delayed. The following gas buildup may break your furnace’s heat exchanger, where natural gas transforms into warm air. Any cracks in it can discharge carbon monoxide, which is regularly emitted outside. This dangerous gas can be deadly in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Mayeuxs AC & Heating urges you to turn it off and contacting us at (985) 764-2426. Too much natural gas in your furnace or a broken heat exchanger are critical troubles that should get immediate attention.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to provide hot air across your home. If the ductwork wasn’t designed correctly or is getting dated, it can be loud when your furnace runs. This can be the case if your furnace makes a banging noise when it shuts off. Contact Mayeuxs AC & Heating at (985) 764-2426 and we’ll pinpoint 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 indicates an electrical problem, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to operate on the correct 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 works with a blower motor, which moves warm or chilly air throughout your rooms, and a capacitor, which triggers the motor. If either of these parts are failing, they will buzz when the furnace starts.

3. Furnace Rattles

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

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s attempting to tell you it could use some TLC. If you’ve forgotten furnace maintenance recently, belts could be worn down or a bearing could need to be greased. We are aware that maintenance sometimes slips your mind, but our professionals can get your furnace heating quietly again quickly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re detecting your furnace making a whistling noise, it’s typically the result of an air leak in your ductwork. You might also notice whistling while the furnace is operating if a floor vent is loose. If you’ve examined your vents but are still sensing sound, Mayeuxs AC & Heating can provide support. It’s important to get loose ductwork fixed fast, as it can make comfort troubles in your house and drive up your utility expenses.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not a good sign if you hear your furnace making a grinding noise. This metal-on-metal sound usually means there’s an issue with your furnace’s blower. Shut down your furnace off promptly and contact us at (985) 764-2426 for support.

When you’re hearing an uncommon noise from your furnace, Mayeuxs AC & Heating is ready to provide assistance. Contact us at (985) 764-2426 to book your furnace repair appointment now.