When your furnace is running like it should, it should provide warmth without generating too much disruption. While it’s normal to notice your furnace making noise as it starts up, other disruptions are signaling your furnace requires immediate professional help.

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

1. Furnace Makes Banging or Knocking Sounds

You could 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 several problems. These involve gas accumulating in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system turns filthy over time, so that’s why it’s critical to set yearly furnace maintenance with Indoor Comfort Systems HVAC. One of the jobs our pros perform during this appointment is clean your furnace’s burners. When this piece gets dirty, you may hear your furnace making a loud rumbling noise after ignition is delayed. The subsequent gas buildup can fracture your furnace’s heat exchanger, where natural gas turns into warmth. Any breaks in it can emit carbon monoxide, which is normally emitted outdoors. This hazardous gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Indoor Comfort Systems HVAC advises turning it off and contacting us at 215-741-5505. Too much natural gas in your furnace or a broken heat exchanger are dangerous troubles that should get prompt repairs.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to move hot air across your home. If the ductwork wasn’t put in properly or is aging, it can be loud when your furnace is on. This may be the issue if your furnace makes a banging noise when it shuts off. Get in touch with Indoor Comfort Systems HVAC at 215-741-5505 and we’ll determine the problem.

2. Furnace Makes a Buzzing Sound

If you hear your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound frequently means there’s an electrical problem, like with its transformer, blower motor or capacitor.

Your furnace relies on an internal transformer to work on the proper voltage. If wires or the box isn’t tight enough, you might detect a low humming noise in the furnace when off. Your furnace also has a blower motor, which moves warm or cold air around your space, and a capacitor, which starts the motor. If either of these parts are going out, 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 may be related to something small, like a loose screw, or something serious, like a broken piece. In either case, we recommend shutting off your furnace and calling our heating specialists at 215-741-5505 for help.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s trying to get your attention it could use some TLC. If you’ve skipped furnace maintenance the past few years, belts could be worn down or a bearing may need to be lubed. We realize that maintenance sometimes slips your mind, but our techs can get your furnace running quietly again fast.

5. Furnace Whistles

When you’re detecting your furnace making a whistling noise, it’s likely the result of an air leak in your ductwork. You may also hear whistling while the furnace is on if a floor vent isn’t secure. If you’ve examined your vents but are still noticing sound, Indoor Comfort Systems HVAC can assist you. It’s critical to get loose ductwork fixed without delay, because it can create comfort troubles in your home and drive up your gas costs.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a good 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. Shut down your furnace off immediately and call our pros at 215-741-5505 for assistance.

When you’re noticing a weird noise from your furnace, Indoor Comfort Systems HVAC is here to support you. Contact us at 215-741-5505 to book your furnace repair appointment today.