When your furnace is operating like it should, it should provide warm air without creating too much sound. While it’s common to catch your furnace making noise as it begins running, other disruptions are signaling your furnace should get immediate professional assistance.

Here are some of the most reported furnace noises and what they can mean. If your furnace is making a strange noise, our friendly heating specialists are here to fix the problem with the best furnace repair in Cambridge, Maryland.

1. Furnace Making a Banging Noise

You could have a serious issue on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it may signal there could be a few problems. These include gas accumulating in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system gets dirty over time, so that’s why it’s essential to set routine furnace maintenance with Pliescott HVAC Services LLC. One of the things our techs do during this appointment is clean your furnace’s burners. When this piece gets grubby, you could hear your furnace making a loud rumbling noise when ignition takes more time. The resulting gas buildup might fracture your furnace’s heat exchanger, where natural gas turns into heat. Any cracks in it can leak carbon monoxide, which is normally vented outside. This toxic gas can be deadly in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Pliescott HVAC Services LLC recommends turning it off and contacting us at 410-228-4822. Significant natural gas in your furnace or a ruptured heat exchanger are critical issues that necessitate prompt attention.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to move hot air around your home. If the ductwork wasn’t put in properly or is aging, it can be loud when your furnace runs. This may be the issue if your furnace makes a banging noise when it shuts off. Get in touch with Pliescott HVAC Services LLC at 410-228-4822 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

If you notice your furnace making a buzzing noise, don’t delay calling us. A buzzing sound frequently is telling you there’s an electrical situation, 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 might notice a low humming noise in the furnace when off. Your furnace also uses a blower motor, which distributes heated or cooled air across your space, and a capacitor, which turns on the motor. If either of these components are failing, they will buzz when the furnace starts.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it may be due to something little, like an unsecure screw, or something serious, like a broken component. In either case, we urge you to shut your furnace off and calling our heating professionals at 410-228-4822 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s attempting to alert you it needs some TLC. If you’ve forgotten furnace maintenance the last couple of years, belts could be worn out or a bearing might need to be lubed. We know that maintenance sometimes slips your mind, but our techs can get your furnace heating quietly again quickly.

5. Furnace Making a Whistling Noise

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 on if a floor vent is loose. If you’ve looked at your vents but are still noticing whistling, Pliescott HVAC Services LLC can provide support. It’s important to get loose ductwork fixed fast, since it can make comfort problems in your residence and inflate your energy bills.

6. Furnace Making a Grinding Noise

It’s not a positive sign if you detect your furnace making a grinding noise. This metal-on-metal sound usually means there’s trouble with your furnace’s blower. Shut down your furnace off right away and contact our pros at 410-228-4822 for assistance.

When you’re hearing an atypical noise from your furnace, Pliescott HVAC Services LLC is ready to help. Contact us at 410-228-4822 to request your furnace repair appointment today.