When your furnace is operating correctly, it should provide warmth without generating too much disruption. While it’s expected to catch your furnace making noise as it begins running, other sounds are indicating 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 strange noise, our friendly heating professionals are here to fix the problem with the best furnace repair in Port St. Lucie, Florida.

1. Furnace Makes Banging or Knocking Sounds

You could have an urgent situation on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it can indicate there could be a couple of problems. These range from gas building up in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system turns dirty as time passes, so that’s why it’s critical to book routine 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 if ignition takes longer than normal. The resulting gas buildup may break your furnace’s heat exchanger, where natural gas changes into warm air. Any breaks in it can leak carbon monoxide, which is regularly emitted outdoors. This dangerous gas can be fatal in large concentrations.

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

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to provide heated air across your house. If the ductwork wasn’t designed properly or is getting old, it can make a lot of noise when your furnace runs. This may be the problem if your furnace makes a banging noise when it shuts off. Call Custom Air Systems Inc at 772-247-2283 and we’ll figure out the problem.

2. Furnace Buzzes Constantly

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

Your furnace uses an internal transformer to work on the right voltage. If wires or the box is loose, you might detect a low humming noise in the furnace when off. Your furnace also works with a blower motor, which sends heated or cooled air around your residence, and a capacitor, which triggers 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 the result of something little, like a loose screw, or something serious, like a broken piece. In either case, we recommend shutting off your furnace and calling our heating pros at 772-247-2283 for help.

4. Furnace Squeals

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 neglected furnace maintenance the last couple of years, belts could be worn down or a bearing may need to be lubed. We know that maintenance frequently slips your mind, but our techs can get your furnace heating quietly again rapidly.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s frequently the result of an air leak in your ductwork. You may also hear whistling while the furnace is running if a floor vent isn’t tight. If you’ve looked at your vents but are still sensing noise, Custom Air Systems Inc can assist you. It’s important to get loose ductwork taken care of fast, because it can make comfort problems in your house and increase your utility bills.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not a positive sign if you hear your furnace making a grinding noise. This metal-on-metal sound often means there’s a problem with your furnace’s blower. Switch off your furnace off immediately and call our professionals at 772-247-2283 for assistance.

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