When your furnace is operating properly, it should provide warm air without generating too much sound. While it’s normal to hear your furnace making noise as it turns on, other noises are indicating your furnace needs immediate professional assistance.

Here are some of the most reported furnace noises and what they can be signaling. If your furnace is making a weird noise, our friendly heating professionals are here to fix the problem with the best furnace repair in Mount Pleasant, South Carolina.

1. Furnace Makes a Banging Sound

You could have an urgent problem on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it may mean 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 gets grimy over the years, so that’s why it’s critical to book seasonal furnace maintenance with Olde Towne Heating & Air. One of the things our professionals do during this work is clean your furnace’s burners. When this component gets dirty, you may hear your furnace making a loud rumbling noise after ignition takes more time. The subsequent gas buildup might fracture your furnace’s heat exchanger, where natural gas transforms into warm air. Any cracks in it can leak carbon monoxide, which is normally vented away from your home. This toxic gas can be deadly in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Olde Towne Heating & Air advises turning it off and reaching us at 843-485-0967. Significant natural gas in your furnace or a fractured heat exchanger are serious problems that should get immediate repairs.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to provide heated air around your home. If the ductwork wasn’t put in properly or is getting old, it can be noisy when your furnace runs. This might be the case 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 hear your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound typically means there’s an electrical problem, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to run on the proper voltage. If wires or the box is loose, you could hear a low humming noise in the furnace when off. Your furnace also has a blower motor, which moves warm or chilly air throughout your home, and a capacitor, which triggers the motor. If either of these parts are failing, they will buzz when the furnace switches on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it could be due to something little, like a loose screw, or something critical, like a broken part. In either case, we recommend shutting off your furnace and contacting our heating specialists at 843-485-0967 for assistance.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s trying to get your attention it needs some TLC. If you’ve skipped furnace maintenance the last couple of years, belts could be worn down or a bearing could need to be lubricated. We realize that maintenance often slips your mind, but our pros can get your furnace operating quietly again quickly.

5. Furnace Whistles

When you’re hearing your furnace making a whistling noise, it’s likely due to an air leak in your ductwork. You could also be aware of whistling while the furnace is on if a floor vent is loose. If you’ve checked your vents but are still noticing sound, Olde Towne Heating & Air can help. It’s critical to get loose ductwork repaired without delay, as it can make comfort issues in your residence and increase your heating bills.

6. Furnace Making a Grinding Noise

It’s not an encouraging sign if you notice your furnace making a grinding noise. This metal-on-metal noise usually means there’s trouble with your furnace’s blower. Turn off your furnace off instantly and contact our pros at 843-485-0967 for assistance.

When you’re noticing an uncommon noise from your furnace, Olde Towne Heating & Air is ready to support you. Contact us at 843-485-0967 to book your furnace repair appointment now.