When your furnace is operating correctly, it should give heat without creating too much noise. While it’s expected to notice your furnace making noise as it starts up, other disruptions are showing your furnace requires immediate professional help.

Here are some of the most frequent furnace noises and what they could be signaling. If your furnace is making a weird noise, our friendly heating professionals are here to help with the best furnace repair in Lafayette, 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 may signal there could be a couple of problems. These involve gas accumulating in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system becomes dirty over time, so that’s why it’s essential to book routine furnace maintenance with AC Sales. One of the jobs our technicians complete during this work is clean your furnace’s burners. When this part gets dirty, you might hear your furnace making a loud rumbling noise if ignition takes more time. The following gas buildup may break your furnace’s heat exchanger, where natural gas changes into warm air. Any cracks in it can discharge carbon monoxide, which is ordinarily vented outdoors. This dangerous gas can be deadly in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, AC Sales recommends turning it off and calling us at (337) 234-2345. Significant natural gas in your furnace or a ruptured heat exchanger are critical troubles that should get fast service.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to provide heated air around your residence. If the ductwork wasn’t designed properly or is aging, it can be noisy when your furnace is on. This can be the problem if your furnace makes a banging noise when it shuts off. Get in touch with AC Sales at (337) 234-2345 and we’ll determine the problem.

2. Furnace Buzzes Constantly

If you observe your furnace making a buzzing noise, don’t delay calling us. A buzzing sound frequently indicates an electrical problem, 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 notice a low humming noise in the furnace when off. Your furnace also has a blower motor, which moves warm or cold air across your home, and a capacitor, which triggers the motor. If either of these pieces are fading, they will buzz when the furnace switches on.

3. Furnace Making a Rattling Noise

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

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s making an effort to get your attention it requires some TLC. If you’ve forgotten furnace maintenance the past few years, belts could be worn down or a bearing may need to be greased. We know that maintenance frequently slips your mind, but our technicians can get your furnace running quietly again rapidly.

5. Furnace Whistles

When you’re noticing your furnace making a whistling noise, it’s likely the result of an air leak in your ductwork. You may also notice whistling while the furnace is running if a floor vent is loose. If you’ve checked your vents but are still sensing sound, AC Sales can assist you. It’s essential to get loose ductwork taken care of without delay, since it can make comfort issues in your home and inflate your heating expenses.

6. Furnace Making a Grinding Noise

It’s not a positive sign if you detect your furnace making a grinding noise. This metal-on-metal racket typically means there’s trouble with your furnace’s blower. Turn off your furnace off promptly and call us at (337) 234-2345 for assistance.

When you’re hearing an atypical noise from your furnace, AC Sales is ready to support you. Contact us at (337) 234-2345 to request your furnace repair appointment right away.