When your furnace is working properly, it should deliver warmth without generating too much noise. While it’s expected to catch your furnace making noise as it starts up, other sounds are showing your furnace should get immediate professional support.

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

1. Furnace Makes Banging or Knocking Sounds

You may have a critical problem on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it may indicate 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 filthy as time passes, so that’s why it’s essential to schedule annual furnace maintenance with Strine's. One of the jobs our professionals complete during this service is clean your furnace’s burners. When this part gets grubby, you could hear your furnace making a loud rumbling noise after ignition takes more time. The following gas buildup might crack your furnace’s heat exchanger, where natural gas changes into warmth. Any fractures in it can leak carbon monoxide, which is ordinarily released outdoors. This hazardous gas can be fatal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Strine's recommends turning it off and calling us at 717-383-4479. Too much natural gas in your furnace or a ruptured heat exchanger are serious troubles that necessitate immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to provide heated air throughout your house. If the ductwork wasn’t designed correctly or is getting old, it can be loud when your furnace is heating. 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 Makes a Buzzing Sound

If you hear your furnace making a buzzing noise, don’t delay calling us. A buzzing sound frequently is telling you there’s an electrical problem, like with its transformer, blower motor or capacitor.

Your furnace relies on an internal transformer to operate on the right voltage. If wires or the box is loose, you could hear a low humming noise in the furnace when off. Your furnace also has a blower motor, which distributes heated or cooled air across your house, and a capacitor, which turns on the motor. If either of these components are fading, they will buzz when the furnace turns on.

3. Furnace Rattles

If your furnace is making a rattling noise, it could be due to something small, like an unsecure screw, or something major, like a broken piece. In either case, we recommend shutting off your furnace and getting in touch with our heating pros at 717-383-4479 for assistance.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s trying to alert you it needs some TLC. If you’ve forgotten furnace maintenance the past few years, belts could be worn down or a bearing may need to be greased. We know that maintenance sometimes slips your mind, but our professionals can get your furnace operating quietly again rapidly.

5. Furnace Whistles

When you’re hearing your furnace making a whistling noise, it’s likely due to 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 sensing sound, Strine's can help. It’s critical to get loose ductwork taken care of without delay, because it can result in comfort issues in your residence and increase your gas bills.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a good sign if you hear your furnace making a grinding noise. This metal-on-metal sound typically means there’s an issue with your furnace’s blower. Turn off your furnace off instantly and reach our professionals at 717-383-4479 for support.

When you’re getting a weird noise from your furnace, Strine's is here to provide assistance. Contact us at 717-383-4479 to book your furnace repair appointment today.