When your furnace is working correctly, it should provide heat without generating too much sound. While it’s expected to notice your furnace making noise as it turns on, other disruptions are showing your furnace requires immediate professional help.

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

1. Furnace Makes a Banging Sound

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

Banging Sounds Coming from Your Furnace

Your heating system turns filthy over time, so that’s why it’s important to schedule routine furnace maintenance with Custom Air Systems Inc. One of the tasks our techs complete during this work is clean your furnace’s burners. When this piece gets grimy, you could hear your furnace making a loud rumbling noise after ignition takes longer than normal. The following gas buildup may crack your furnace’s heat exchanger, where natural gas transforms into heat. Any fractures in it can emit carbon monoxide, which is ordinarily emitted away from your home. This hazardous gas can be deadly 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. Significant natural gas in your furnace or a broken heat exchanger are dangerous issues that should get prompt repairs.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to deliver warm air around your residence. If the ductwork wasn’t installed correctly or is getting dated, it can be loud when your furnace is heating. This may be the problem if your furnace makes a banging noise when it shuts off. Contact Custom Air Systems Inc at 772-247-2283 and we’ll determine the problem.

2. Furnace Makes a Buzzing Sound

If you notice your furnace making a buzzing noise, don’t wait to call us. A buzzing sound often indicates an electrical issue, 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 is loose, you could hear a low humming noise in the furnace when off. Your furnace also has a blower motor, which distributes heated or cooled air throughout your house, and a capacitor, which turns on the motor. If either of these components are failing, they will buzz when the furnace starts.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it can be due to something minor, like an unsecure screw, or something critical, like a broken part. In either case, we recommend shutting off your furnace and getting in touch with our heating specialists at 772-247-2283 for assistance.

4. Furnace Squeals

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

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re hearing your furnace making a whistling noise, it’s typically due to an air leak in your ductwork. You may also be aware of whistling while the furnace is running if a floor vent isn’t tight. If you’ve examined your vents but are still hearing sound, Custom Air Systems Inc can assist you. It’s important to get loose ductwork fixed without delay, as it can create comfort troubles in your home and increase your energy costs.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

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

When you’re getting an atypical noise from your furnace, Custom Air Systems Inc is ready to help. Contact us at 772-247-2283 to schedule your furnace repair appointment now.