When your furnace is working like it should, it should deliver heat without making too much sound. While it’s normal to catch your furnace making noise as it turns on, other sounds are indicating your furnace requires immediate professional assistance.

Here are some of the most common furnace noises and what they could be indicating. If your furnace is making a weird noise, our friendly heating pros are here to fix the problem with the best furnace repair in Port St. Lucie, Florida.

1. Furnace Makes a Banging Sound

You might have a serious issue on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it might mean there could be several problems. These include gas accumulating in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system gets dirty over time, so that’s why it’s critical to book yearly furnace maintenance with Custom Air Systems Inc. One of the tasks our professionals complete during this work is clean your furnace’s burners. When this component gets grimy, you could hear your furnace making a loud rumbling noise after ignition is delayed. The ensuing gas buildup may fracture your furnace’s heat exchanger, where natural gas turns into warmth. Any cracks in it can discharge carbon monoxide, which is ordinarily vented outside. This hazardous gas can be fatal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Custom Air Systems Inc recommends turning it off and contacting us at 772-247-2283. Too much natural gas in your furnace or a broken heat exchanger are hazardous issues that necessitate prompt attention.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to move warm air throughout your home. If the ductwork wasn’t designed correctly or is aging, it can make a lot of noise when your furnace is on. This could be the case if your furnace makes a banging noise when it shuts off. Get in touch with Custom Air Systems Inc at 772-247-2283 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

If you observe your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound usually indicates an electrical situation, like with its transformer, blower motor or capacitor.

Your furnace relies on an internal transformer to run on the right 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 heated or chilly air throughout your home, and a capacitor, which turns on the motor. If either of these components are failing, they will buzz when the furnace starts.

3. Furnace Rattles

If your furnace is making a rattling noise, it could be related to something small, like an unsecure screw, or something major, like a broken part. In either case, we recommend shutting off your furnace and getting in touch with our heating professionals at 772-247-2283 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s attempting to alert you it needs some TLC. If you’ve skipped furnace maintenance recently, belts could be worn out or a bearing could need to be lubed. We are aware that maintenance frequently slips your mind, but our technicians can get your furnace heating quietly again fast.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s likely because of an air leak in your ductwork. You may also hear whistling while the furnace is running if a floor vent is loose. If you’ve looked at your vents but are still sensing whistling, Custom Air Systems Inc can provide support. It’s important to get loose ductwork repaired without delay, because it can result in comfort troubles in your house and drive up your gas costs.

6. Furnace Making a Grinding Noise

It’s not a good sign if you detect your furnace making a grinding noise. This metal-on-metal noise frequently means there’s an issue with your furnace’s blower. Turn off your furnace off right away and reach our pros at 772-247-2283 for support.

When you’re hearing a weird noise from your furnace, Custom Air Systems Inc is ready to support you. Contact us at 772-247-2283 to schedule your furnace repair appointment right away.