When your furnace is operating like it should, it should provide warmth without making too much sound. While it’s expected to hear your furnace making noise as it turns on, other noises are signaling your furnace requires immediate professional help.

Here are some of the most common furnace noises and what they could be signaling. If your furnace is making an odd noise, our friendly heating specialists are here to fix the problem with the best furnace repair in Lexington, North Carolina.

1. Furnace Makes Banging or Knocking Sounds

You might have an urgent situation on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it may signal there could be a couple of problems. These include gas building up in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system turns grimy over time, so that’s why it’s important to set routine furnace maintenance with James Heating & A/C, Inc. One of the jobs our professionals perform during this appointment is clean your furnace’s burners. When this component gets grimy, you may hear your furnace making a loud rumbling noise if ignition takes more time. The subsequent gas buildup may crack your furnace’s heat exchanger, where natural gas changes into warmth. Any breaks in it can emit carbon monoxide, which is ordinarily emitted outside. This hazardous gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, James Heating & A/C, Inc advises turning it off and contacting us at 336-853-6070. Significant natural gas in your furnace or a broken heat exchanger are critical issues that require immediate repairs.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to provide heated air around your home. If the ductwork wasn’t designed correctly 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 James Heating & A/C, Inc at 336-853-6070 and we’ll pinpoint the problem.

2. Furnace Buzzes Constantly

If you notice your furnace making a buzzing noise, don’t delay calling us. A buzzing sound often indicates 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 needs to be tightened, you might notice a low humming noise in the furnace when off. Your furnace also has a blower motor, which moves warm or cooled air throughout your residence, and a capacitor, which triggers the motor. If either of these parts are failing, they will buzz when the furnace turns on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it can be the result of something small, like a loose screw, or something critical, like a broken component. In either case, we advise shutting your furnace off and getting in touch with our heating professionals at 336-853-6070 for assistance.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s making an effort to alert you it could use some TLC. If you’ve skipped furnace maintenance recently, belts could be worn down or a bearing could need to be lubricated. We are aware that maintenance often slips your mind, but our techs can get your furnace running quietly again fast.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s typically the result of an air leak in your ductwork. You could also notice whistling while the furnace is on if a floor vent is loose. If you’ve checked your vents but are still hearing whistling, James Heating & A/C, Inc can help. It’s important to get loose ductwork repaired fast, since it can create comfort issues in your house and inflate your gas bills.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not an encouraging sign if you detect your furnace making a grinding noise. This metal-on-metal sound typically means there’s a problem with your furnace’s blower. Turn off your furnace off promptly and contact our professionals at 336-853-6070 for assistance.

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