When your furnace is operating like it should, it should deliver warm air without making too much sound. While it’s common to notice your furnace making noise as it starts up, other noises are signaling your furnace should get immediate professional help.

Here are some of the most reported furnace noises and what they can be indicating. If your furnace is making an atypical noise, our friendly heating specialists are here to help with the best furnace repair in Narvon, Pennsylvania.

1. Furnace Making a Banging Noise

You could have a critical situation on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it may mean there could be several problems. These range from gas accumulating in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system gets grimy over time, so that’s why it’s essential to book annual furnace maintenance with Ameri-Tec. One of the tasks our pros perform during this appointment is clean your furnace’s burners. When this part gets dirty, you might hear your furnace making a loud rumbling noise if ignition is delayed. The ensuing gas buildup may break your furnace’s heat exchanger, where natural gas transforms into warmth. Any cracks in it can discharge carbon monoxide, which is regularly released outdoors. This toxic gas can be deadly in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Ameri-Tec advises turning it off and calling us at 717-479-4950. Excessive natural gas in your furnace or a ruptured heat exchanger are serious problems that should get fast repairs.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to deliver warm air throughout your house. If the ductwork wasn’t designed properly or is getting old, it can be noisy when your furnace runs. This may be the case if your furnace makes a banging noise when it shuts off. Contact Ameri-Tec at 717-479-4950 and we’ll figure out the problem.

2. Furnace Buzzes Constantly

If you observe your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound often indicates an electrical problem, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to run on the correct voltage. If wires or the box needs to be tightened, you could notice a low humming noise in the furnace when off. Your furnace also works with a blower motor, which distributes warm or cold air across your residence, and a capacitor, which triggers the motor. If either of these pieces are fading, they will buzz when the furnace turns on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it can be related to something little, like a loose screw, or something serious, like a broken component. In either case, we advise shutting your furnace off and getting in touch with our heating specialists at 717-479-4950 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 tell you it could use some TLC. If you’ve forgotten furnace maintenance the past few years, belts could be worn out or a bearing could need to be lubricated. We know that maintenance frequently slips your mind, but our professionals can get your furnace heating quietly again quickly.

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 could also hear whistling while the furnace is running if a floor vent isn’t tight. If you’ve checked your vents but are still hearing noise, Ameri-Tec can provide support. It’s important to get loose ductwork taken care of quickly, because it can make comfort troubles in your house and inflate your gas costs.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not an encouraging sign if you detect your furnace making a grinding noise. This metal-on-metal noise often means there’s a problem with your furnace’s blower. Turn off your furnace off immediately and call our professionals at 717-479-4950 for support.

When you’re hearing an uncommon noise from your furnace, Ameri-Tec is available to support you. Contact us at 717-479-4950 to request your furnace repair appointment right away.