When your furnace is working like it should, it should give heat without creating too much disruption. While it’s expected to catch your furnace making noise as it turns on, other sounds are indicating your furnace needs immediate professional help.

Here are some of the most reported furnace noises and what they might be indicating. If your furnace is making a strange noise, our friendly heating pros are here to assist with the best furnace repair in Brookfield, Connecticut.

1. Furnace Making a Banging Noise

You could have a critical situation on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it might mean there could be several problems. These involve gas increasing in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system gets grimy over time, so that’s why it’s important to book seasonal furnace maintenance with Central Air LLC. One of the jobs our professionals perform during this work is clean your furnace’s burners. When this piece gets grimy, you may hear your furnace making a loud rumbling noise if ignition takes longer than normal. The resulting gas buildup might crack your furnace’s heat exchanger, where natural gas turns into warmth. Any cracks in it can discharge carbon monoxide, which is normally emitted away from your home. This toxic gas can be fatal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Central Air LLC recommends turning it off and contacting us at 203-357-5913. Too much natural gas in your furnace or a fractured heat exchanger are hazardous issues that should get prompt repairs.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to deliver hot air around your residence. If the ductwork wasn’t installed properly or is getting old, it can be noisy when your furnace runs. This might be the problem if your furnace makes a banging noise when it shuts off. Get in touch with Central Air LLC at 203-357-5913 and we’ll pinpoint the problem.

2. Furnace Making a Buzzing Noise

If you notice your furnace making a buzzing noise, don’t wait to call us. A buzzing sound often is telling you there’s an electrical problem, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to work on the proper voltage. If wires or the box is loose, you could detect a low humming noise in the furnace when off. Your furnace also has a blower motor, which sends warm or cooled air across your rooms, and a capacitor, which starts the motor. If either of these components are fading, they will buzz when the furnace starts.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it can be related to something small, like an unsecure screw, or something critical, like a broken component. In either case, we urge you to shut your furnace off and getting in touch with our heating professionals at 203-357-5913 for assistance.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s attempting to tell you it needs some TLC. If you’ve skipped furnace maintenance recently, belts could be worn down or a bearing could need to be lubed. We know that maintenance sometimes slips your mind, but our pros can get your furnace running quietly again fast.

5. Furnace Making a Whistling Noise

When you’re hearing your furnace making a whistling noise, it’s likely because of an air leak in your ductwork. You might also hear whistling while the furnace is running if a floor vent isn’t tight. If you’ve checked your vents but are still sensing noise, Central Air LLC can provide support. It’s essential to get loose ductwork taken care of without delay, because it can create comfort issues in your home and inflate your energy costs.

6. Furnace Making a Grinding Noise

It’s not a good sign if you notice your furnace making a grinding noise. This metal-on-metal sound often means there’s a problem with your furnace’s blower. Shut down your furnace off instantly and contact us at 203-357-5913 for support.

When you’re noticing an atypical noise from your furnace, Central Air LLC is ready to provide assistance. Contact us at 203-357-5913 to book your furnace repair appointment right away.