When your furnace is running like it should, it should provide warm air without generating too much disruption. While it’s expected to catch your furnace making noise as it begins running, other sounds are signaling your furnace should get immediate professional assistance.

Here are some of the most reported furnace noises and what they might 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 Lexington, North Carolina.

1. Furnace Makes Banging or Knocking Sounds

You may 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 might signal there could be a couple of problems. These range from gas increasing in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system turns filthy as time passes, so that’s why it’s important to set routine furnace maintenance with James Heating & A/C, Inc. One of the jobs our techs perform during this appointment is clean your furnace’s burners. When this piece gets grimy, you might hear your furnace making a loud rumbling noise if ignition is delayed. The ensuing gas buildup can crack your furnace’s heat exchanger, where natural gas changes into warmth. Any cracks in it can leak carbon monoxide, which is regularly vented outside. This hazardous gas can be deadly in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, James Heating & A/C, Inc advises turning it off and contacting us at 336-853-6070. Too much natural gas in your furnace or a cracked heat exchanger are hazardous issues that should get fast repairs.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to move warm air throughout your house. If the ductwork wasn’t designed right or is aging, it can be loud when your furnace is heating. This can be the problem if your furnace makes a banging noise when it shuts off. Contact James Heating & A/C, Inc at 336-853-6070 and we’ll figure out the problem.

2. Furnace Buzzes Constantly

If you observe your furnace making a buzzing noise, don’t delay calling us. A buzzing sound usually is telling you there’s 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 is loose, you may notice a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves hot or cooled air across your rooms, and a capacitor, which starts the motor. If either of these pieces are failing, they will buzz when the furnace switches on.

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 an unfastened screw, or something major, like a broken part. In either case, we urge you to shut your furnace off and calling our heating pros at 336-853-6070 for help.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s making an effort to get your attention it needs some TLC. If you’ve forgotten furnace maintenance the last couple of years, belts could be worn down or a bearing could need to be lubed. We realize that maintenance sometimes slips your mind, but our technicians can get your furnace running quietly again rapidly.

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 might also hear whistling while the furnace is on if a floor vent isn’t secure. If you’ve looked at your vents but are still sensing whistling, James Heating & A/C, Inc can help. It’s important to get loose ductwork repaired without delay, because it can result in comfort troubles in your home and increase your utility expenses.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not an encouraging sign if you notice your furnace making a grinding noise. This metal-on-metal racket typically means there’s trouble with your furnace’s blower. Switch off your furnace off promptly and reach our professionals at 336-853-6070 for assistance.

When you’re noticing a strange noise from your furnace, James Heating & A/C, Inc is here to support you. Contact us at 336-853-6070 to request your furnace repair appointment right away.