When your furnace is running properly, it should give warmth without generating too much disruption. While it’s common to hear your furnace making noise as it begins running, other disruptions are showing your furnace should get immediate professional assistance.

Here are some of the most common furnace noises and what they might be indicating. If your furnace is making a weird noise, our friendly heating pros are here to fix the problem with the best furnace repair in Fredericksburg, Virginia.

1. Furnace Making a Banging Noise

You could have a critical issue on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it may mean there could be several problems. These include gas increasing in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system becomes grimy as time passes, so that’s why it’s essential to book routine furnace maintenance with Childress Heating & AC. One of the jobs our technicians perform during this work is clean your furnace’s burners. When this part gets grimy, you may hear your furnace making a loud rumbling noise if ignition is delayed. The ensuing gas buildup might crack your furnace’s heat exchanger, where natural gas transforms into warm air. Any cracks in it can discharge carbon monoxide, which is normally vented outside. This hazardous gas can be lethal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Childress Heating & AC advises turning it off and reaching us at 540-675-4306. Too much natural gas in your furnace or a cracked heat exchanger are critical troubles that necessitate immediate repairs.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to deliver warm air around your house. If the ductwork wasn’t put in properly or is getting old, it can be loud when your furnace is on. This can be the case if your furnace makes a banging noise when it shuts off. Call Childress Heating & AC at 540-675-4306 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 usually 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 right voltage. If wires or the box isn’t tight enough, you could hear a low humming noise in the furnace when off. Your furnace also works with a blower motor, which distributes hot or cold air around your home, and a capacitor, which starts the motor. If either of these parts are fading, they will buzz when the furnace starts.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it could be related to something little, like an unfastened screw, or something major, like a broken component. In either case, we recommend shutting off your furnace and calling our heating pros at 540-675-4306 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s attempting to alert you it requires some TLC. If you’ve neglected furnace maintenance recently, belts could be worn out or a bearing could need to be lubed. We are aware that maintenance often slips your mind, but our pros can get your furnace operating quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re detecting your furnace making a whistling noise, it’s frequently the result of an air leak in your ductwork. You might also hear whistling while the furnace is running if a floor vent is loose. If you’ve checked your vents but are still noticing noise, Childress Heating & AC can help. It’s essential to get loose ductwork taken care of fast, as it can result in comfort issues in your house and drive up your heating costs.

6. Furnace Making a Grinding Noise

It’s not a good sign if you detect your furnace making a grinding noise. This metal-on-metal noise typically means there’s an issue with your furnace’s blower. Turn off your furnace off instantly and reach our pros at 540-675-4306 for help.

When you’re hearing a weird noise from your furnace, Childress Heating & AC is ready to help. Contact us at 540-675-4306 to request your furnace repair appointment right away.