When your furnace is working properly, it should give warm air without generating too much disruption. While it’s common to hear your furnace making noise as it starts up, other noises are indicating your furnace requires immediate professional support.

Here are some of the most frequent furnace noises and what they can be signaling. If your furnace is making a weird noise, our friendly heating specialists are here to assist with the best furnace repair in Shamokin and Sunbury, Pennsylvania.

1. Furnace Making a Banging Noise

You might have a serious problem on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it may signal there could be several problems. These range from gas building up in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system becomes filthy over time, so that’s why it’s important to schedule annual furnace maintenance with LTS Plumbing & Heating Inc.. One of the things our professionals perform during this work is clean your furnace’s burners. When this component gets grubby, you could hear your furnace making a loud rumbling noise after ignition is delayed. The resulting gas buildup might crack your furnace’s heat exchanger, where natural gas transforms into heat. Any breaks in it can leak carbon monoxide, which is normally released away from your home. This dangerous gas can be deadly in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, LTS Plumbing & Heating Inc. advises turning it off and calling us at 570-648-0748. Significant natural gas in your furnace or a broken heat exchanger are hazardous troubles that require fast service.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to deliver hot air across your home. If the ductwork wasn’t designed right or is aging, it can be loud when your furnace is on. This may be the issue if your furnace makes a banging noise when it shuts off. Get in touch with LTS Plumbing & Heating Inc. at 570-648-0748 and we’ll pinpoint 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 typically indicates an electrical situation, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to operate on the proper voltage. If wires or the box isn’t tight enough, you could detect a low humming noise in the furnace when off. Your furnace also works with a blower motor, which sends hot or cooled air around your rooms, and a capacitor, which starts 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 can be the result of something little, like an unfastened screw, or something serious, like a broken part. In either case, we recommend shutting off your furnace and contacting our heating specialists at 570-648-0748 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s trying to tell you it needs some TLC. If you’ve skipped furnace maintenance the last couple of years, belts could be worn out or a bearing could need to be greased. We realize 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 typically because of an air leak in your ductwork. You might also hear whistling while the furnace is operating if a floor vent isn’t secure. If you’ve looked at your vents but are still noticing sound, LTS Plumbing & Heating Inc. can help. It’s essential to get loose ductwork repaired fast, since it can make comfort problems in your residence and increase your heating expenses.

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 racket often means there’s a problem with your furnace’s blower. Turn off your furnace off right away and call our professionals at 570-648-0748 for assistance.

When you’re getting a weird noise from your furnace, LTS Plumbing & Heating Inc. is available to support you. Contact us at 570-648-0748 to request your furnace repair appointment today.