When your furnace is running correctly, it should deliver warm air without creating too much noise. While it’s expected to hear your furnace making noise as it starts up, other noises are signaling your furnace needs immediate professional help.

Here are some of the most reported furnace noises and what they might be signaling. If your furnace is making a strange noise, our friendly heating professionals are here to assist with the best furnace repair in Port St. Lucie, Florida.

1. Furnace Making a Banging Noise

You could have a critical situation 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 few problems. These include gas accumulating in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system becomes filthy over the years, so that’s why it’s critical to set annual furnace maintenance with Custom Air Systems Inc. One of the jobs our technicians complete during this work is clean your furnace’s burners. When this part gets dirty, you could hear your furnace making a loud rumbling noise when ignition takes more time. The resulting gas buildup may fracture your furnace’s heat exchanger, where natural gas changes into warmth. Any breaks in it can emit carbon monoxide, which is ordinarily released away from your home. This dangerous gas can be lethal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Custom Air Systems Inc advises turning it off and contacting us at 772-247-2283. Significant natural gas in your furnace or a fractured heat exchanger are serious issues that require fast repairs.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to provide warm air around your home. If the ductwork wasn’t designed right or is aging, it can make a lot of noise when your furnace is heating. This could be the issue if your furnace makes a banging noise when it shuts off. Contact Custom Air Systems Inc at 772-247-2283 and we’ll pinpoint the problem.

2. Furnace Making a Buzzing Noise

If you notice your furnace making a buzzing noise, don’t delay calling us. A buzzing sound typically is telling you there’s an electrical issue, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to run on the right voltage. If wires or the box is loose, you may notice a low humming noise in the furnace when off. Your furnace also has a blower motor, which moves hot or chilly air throughout your house, and a capacitor, which starts the motor. If either of these components are fading, they will buzz when the furnace turns on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it could be the result of something small, like a loose screw, or something critical, like a broken part. In either case, we recommend shutting off your furnace and calling our heating pros at 772-247-2283 for assistance.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s trying to tell you it needs some TLC. If you’ve neglected furnace maintenance the past few years, belts could be worn out or a bearing could need to be greased. We realize that maintenance sometimes slips your mind, but our technicians can get your furnace operating quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re hearing your furnace making a whistling noise, it’s likely due to an air leak in your ductwork. You could also hear whistling while the furnace is running if a floor vent isn’t secure. If you’ve looked at your vents but are still hearing whistling, Custom Air Systems Inc can help. It’s critical to get loose ductwork fixed without delay, as it can create comfort troubles in your residence and inflate your energy costs.

6. Furnace Making a Grinding Noise

It’s not an encouraging sign if you hear your furnace making a grinding noise. This metal-on-metal racket usually means there’s a problem with your furnace’s blower. Turn off your furnace off now and reach our pros at 772-247-2283 for help.

When you’re getting a weird noise from your furnace, Custom Air Systems Inc is here to help. Contact us at 772-247-2283 to book your furnace repair appointment today.