When your furnace is working correctly, it should provide warm air without generating too much noise. While it’s common to hear your furnace making noise as it starts up, other disruptions are showing your furnace requires immediate professional help.

Here are some of the most frequent furnace noises and what they can be signaling. If your furnace is making an odd noise, our friendly heating pros are here to fix the problem with the best furnace repair in York, Pennsylvania.

1. Furnace Making a Banging Noise

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

Banging Sounds Coming from Your Furnace

Your heating system gets grimy as time passes, so that’s why it’s important to set yearly furnace maintenance with Strine's. One of the tasks our professionals perform during this service is clean your furnace’s burners. When this piece gets grubby, you could hear your furnace making a loud rumbling noise if ignition is delayed. The following gas buildup may break your furnace’s heat exchanger, where natural gas transforms into heat. Any fractures in it can leak carbon monoxide, which is normally emitted 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, Strine's advises turning it off and contacting us at 717-383-4479. Too much natural gas in your furnace or a ruptured heat exchanger are dangerous issues that necessitate prompt repairs.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to deliver heated air around your residence. If the ductwork wasn’t designed right or is aging, it can be noisy when your furnace runs. This might be the case if your furnace makes a banging noise when it shuts off. Contact Strine's at 717-383-4479 and we’ll determine the problem.

2. Furnace Buzzes Constantly

If you observe your furnace making a buzzing noise, don’t delay calling us. A buzzing sound usually means there’s an electrical situation, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to operate on the proper voltage. If wires or the box needs to be tightened, you may notice a low humming noise in the furnace when off. Your furnace also has a blower motor, which sends hot or cooled air across your rooms, and a capacitor, which triggers the motor. If either of these components are failing, they will buzz when the furnace starts.

3. Furnace Rattles

If your furnace is making a rattling noise, it may be due to something minor, like a loose screw, or something major, like a broken part. In either case, we urge you to shut your furnace off and getting in touch with our heating pros at 717-383-4479 for support.

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s making an effort to tell you it could use 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 realize that maintenance frequently slips your mind, but our pros can get your furnace heating quietly again rapidly.

5. Furnace Whistles

When you’re noticing your furnace making a whistling noise, it’s frequently because of an air leak in your ductwork. You may also be aware of whistling while the furnace is running if a floor vent isn’t secure. If you’ve examined your vents but are still hearing sound, Strine's can assist you. It’s critical to get loose ductwork taken care of without delay, since it can create comfort troubles in your residence and inflate your gas bills.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not a positive sign if you hear 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 immediately and call our pros at 717-383-4479 for help.

When you’re hearing a weird noise from your furnace, Strine's is ready to support you. Contact us at 717-383-4479 to book your furnace repair appointment right away.