When your furnace is running like it should, it should deliver warm air without making too much noise. While it’s expected to catch your furnace making noise as it starts up, other noises are signaling your furnace needs immediate professional help.

Here are some of the most common furnace noises and what they could mean. 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 Makes a Banging Sound

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

Banging Sounds Coming from Your Furnace

Your heating system turns grimy over the years, so that’s why it’s essential to book routine furnace maintenance with LTS Plumbing & Heating Inc.. One of the things our pros complete during this service is clean your furnace’s burners. When this component gets grimy, you may hear your furnace making a loud rumbling noise when ignition is delayed. The following gas buildup can fracture your furnace’s heat exchanger, where natural gas turns into heat. Any breaks in it can leak carbon monoxide, which is normally released away from your home. This hazardous gas can be fatal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, LTS Plumbing & Heating Inc. recommends turning it off and calling us at 570-648-0748. Too much natural gas in your furnace or a fractured heat exchanger are serious problems that should get prompt repairs.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to provide hot air around your home. If the ductwork wasn’t designed right or is getting old, it can be noisy when your furnace is on. This might be the case if your furnace makes a banging noise when it shuts off. Contact LTS Plumbing & Heating Inc. at 570-648-0748 and we’ll figure out the problem.

2. Furnace Buzzes Constantly

If you observe 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 right voltage. If wires or the box isn’t tight enough, you may notice a low humming noise in the furnace when off. Your furnace also has a blower motor, which sends heated or cold air around your rooms, and a capacitor, which turns on the motor. If either of these parts are fading, they will buzz when the furnace switches on.

3. Furnace Rattles

If your furnace is making a rattling noise, it could be due to something minor, like an unfastened screw, or something major, like a broken component. In either case, we recommend shutting off your furnace and contacting our heating pros at 570-648-0748 for support.

4. Furnace Is Making a High-Pitched Squealing Sound

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 down or a bearing could need to be lubed. We know that maintenance often slips your mind, but our pros can get your furnace running quietly again rapidly.

5. Furnace Whistles

When you’re detecting your furnace making a whistling noise, it’s frequently because of an air leak in your ductwork. You could also be aware of whistling while the furnace is running if a floor vent is loose. If you’ve checked your vents but are still noticing sound, LTS Plumbing & Heating Inc. can help. It’s important to get loose ductwork fixed fast, as it can make comfort issues in your home and increase your heating bills.

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 noise typically means there’s trouble with your furnace’s blower. Switch off your furnace off promptly and contact us at 570-648-0748 for assistance.

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