When your furnace is operating correctly, it should deliver warmth without creating too much disruption. While it’s normal to notice your furnace making noise as it begins running, other noises are indicating your furnace requires immediate professional support.

Here are some of the most common furnace noises and what they can be indicating. If your furnace is making a weird noise, our friendly heating pros are here to help with the best furnace repair in Mount Pleasant, South Carolina.

1. Furnace Making a Banging Noise

You could have a critical problem 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 include gas accumulating in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system turns grimy as time passes, so that’s why it’s important to book seasonal furnace maintenance with Olde Towne Heating & Air. One of the jobs our technicians complete during this appointment is clean your furnace’s burners. When this component gets grubby, you may hear your furnace making a loud rumbling noise when ignition takes longer than normal. The resulting gas buildup might crack your furnace’s heat exchanger, where natural gas turns into warm air. Any fractures in it can leak carbon monoxide, which is ordinarily released outside. This dangerous gas can be fatal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Olde Towne Heating & Air urges you to turn it off and contacting us at 843-485-0967. Too much natural gas in your furnace or a broken heat exchanger are hazardous troubles that should get fast attention.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to provide hot air throughout your residence. If the ductwork wasn’t installed right or is getting old, 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 Olde Towne Heating & Air at 843-485-0967 and we’ll determine the problem.

2. Furnace Making a Buzzing Noise

If you notice your furnace making a buzzing noise, don’t hesitate 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 depends on an internal transformer to operate on the correct voltage. If wires or the box needs to be tightened, you could hear a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves heated or chilly air across your house, and a capacitor, which turns on 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 could be related to something little, like a loose screw, or something major, like a broken part. In either case, we urge you to shut your furnace off and getting in touch with our heating professionals at 843-485-0967 for help.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s attempting to get your attention it needs some TLC. If you’ve skipped furnace maintenance the past few years, belts could be worn down or a bearing could need to be lubed. We realize that maintenance frequently slips your mind, but our techs can get your furnace heating quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re hearing your furnace making a whistling noise, it’s frequently because of an air leak in your ductwork. You may also notice whistling while the furnace is operating if a floor vent isn’t tight. If you’ve examined your vents but are still sensing noise, Olde Towne Heating & Air can assist you. It’s critical to get loose ductwork fixed quickly, since it can make comfort troubles in your residence and drive up your heating costs.

6. Furnace Making a Grinding Noise

It’s not a positive sign if you hear your furnace making a grinding noise. This metal-on-metal racket frequently means there’s trouble with your furnace’s blower. Shut down your furnace off instantly and reach us at 843-485-0967 for assistance.

When you’re noticing an atypical noise from your furnace, Olde Towne Heating & Air is available to help. Contact us at 843-485-0967 to request your furnace repair appointment now.