When your furnace is operating properly, it should give warm air without generating too much disruption. While it’s common to hear your furnace making noise as it starts up, other sounds are signaling your furnace requires immediate professional assistance.

Here are some of the most common furnace noises and what they can mean. If your furnace is making a weird noise, our friendly heating specialists are here to assist with the best furnace repair in Lexington, North Carolina.

1. Furnace Makes a Banging Sound

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 may signal there could be a couple of problems. These involve gas building up in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system turns filthy over the years, so that’s why it’s important to schedule yearly furnace maintenance with James Heating & A/C, Inc. One of the things our professionals complete during this service is clean your furnace’s burners. When this part gets grubby, you might hear your furnace making a loud rumbling noise when ignition takes longer than normal. The ensuing gas buildup may break your furnace’s heat exchanger, where natural gas transforms into warmth. Any breaks in it can discharge carbon monoxide, which is normally released away from your home. This hazardous gas can be deadly in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, James Heating & A/C, Inc recommends turning it off and contacting us at 336-853-6070. Excessive natural gas in your furnace or a fractured heat exchanger are dangerous troubles that necessitate prompt repairs.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to move hot air throughout your house. If the ductwork wasn’t put in correctly or is getting dated, it can be loud when your furnace runs. This might 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 hear your furnace making a buzzing noise, don’t delay calling us. A buzzing sound frequently is telling you there’s an electrical problem, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to run on the correct voltage. If wires or the box needs to be tightened, you may notice a low humming noise in the furnace when off. Your furnace also uses a blower motor, which sends heated or cooled air around your residence, and a capacitor, which turns on the motor. If either of these parts are fading, they will buzz when the furnace turns on.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it can be related to something little, like an unsecure screw, or something serious, like a broken part. In either case, we urge you to shut your furnace off and getting in touch with our heating professionals at 336-853-6070 for support.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s trying to tell you it requires some TLC. If you’ve skipped furnace maintenance the past few years, belts could be worn down or a bearing could need to be lubricated. We know that maintenance sometimes slips your mind, but our pros can get your furnace heating quietly again rapidly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re detecting your furnace making a whistling noise, it’s frequently due to an air leak in your ductwork. You may also notice whistling while the furnace is operating if a floor vent isn’t secure. If you’ve checked your vents but are still sensing noise, James Heating & A/C, Inc can assist you. It’s important to get loose ductwork taken care of quickly, since it can make comfort issues in your home and drive up your gas bills.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not a positive sign if you detect your furnace making a grinding noise. This metal-on-metal noise often means there’s trouble with your furnace’s blower. Turn off your furnace off promptly and contact our professionals at 336-853-6070 for help.

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