When your furnace is running like it should, it should provide warm air without making too much noise. While it’s expected to hear your furnace making noise as it begins running, other disruptions are signaling your furnace needs immediate professional support.

Here are some of the most frequent furnace noises and what they might be indicating. If your furnace is making an atypical 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 could have a serious issue 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 a few problems. These involve gas building up in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system turns dirty as time passes, so that’s why it’s essential to set annual furnace maintenance with Strine's. One of the jobs our professionals perform during this service is clean your furnace’s burners. When this piece gets grubby, you might hear your furnace making a loud rumbling noise when ignition is delayed. The following gas buildup can break your furnace’s heat exchanger, where natural gas changes into warm air. Any cracks in it can discharge carbon monoxide, which is normally released outdoors. This dangerous gas can be deadly in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Strine's advises turning it off and reaching us at 717-383-4479. Significant natural gas in your furnace or a ruptured heat exchanger are serious troubles that require immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to deliver heated air throughout your residence. If the ductwork wasn’t designed correctly or is getting old, it can be noisy when your furnace runs. This may be the issue if your furnace makes a banging noise when it shuts off. Call Strine's at 717-383-4479 and we’ll determine the problem.

2. Furnace Makes a Buzzing Sound

If you notice your furnace making a buzzing noise, don’t wait to call us. A buzzing sound typically is telling you there’s an electrical problem, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to work on the correct voltage. If wires or the box needs to be tightened, you might hear a low humming noise in the furnace when off. Your furnace also has a blower motor, which moves heated or chilly air throughout your house, and a capacitor, which turns on the motor. If either of these pieces are fading, they will buzz when the furnace starts.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it can be due to something minor, like a loose screw, or something critical, 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 Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s making an effort to get your attention it requires some TLC. If you’ve skipped furnace maintenance the past few years, belts could be worn out or a bearing could need to be lubed. We know that maintenance frequently slips your mind, but our pros can get your furnace operating quietly again fast.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re noticing your furnace making a whistling noise, it’s typically because of an air leak in your ductwork. You may also hear whistling while the furnace is on if a floor vent is loose. If you’ve looked at your vents but are still hearing whistling, Strine's can help. It’s essential to get loose ductwork taken care of fast, since it can result in comfort troubles in your house and increase your heating expenses.

6. Furnace Making a Grinding Noise

It’s not a positive sign if you detect your furnace making a grinding noise. This metal-on-metal racket frequently means there’s an issue with your furnace’s blower. Turn off your furnace off immediately and call our pros at 717-383-4479 for assistance.

When you’re getting an atypical noise from your furnace, Strine's is ready to provide assistance. Contact us at 717-383-4479 to request your furnace repair appointment today.