When your furnace is working like it should, it should give heat without creating too much disruption. While it’s common to catch your furnace making noise as it starts up, other disruptions are signaling your furnace should get immediate professional help.

Here are some of the most reported furnace noises and what they might be indicating. If your furnace is making a strange noise, our friendly heating pros are here to assist with the best furnace repair in Croydon, Pennsylvania.

1. Furnace Makes a Banging Sound

You might 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 may signal there could be several problems. These range from gas increasing 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 essential to schedule routine furnace maintenance with Indoor Comfort Systems HVAC. One of the tasks our technicians perform during this appointment is clean your furnace’s burners. When this part gets dirty, you could hear your furnace making a loud rumbling noise if ignition takes more time. The resulting gas buildup can fracture your furnace’s heat exchanger, where natural gas transforms into warm air. Any breaks in it can discharge carbon monoxide, which is normally emitted outside. This toxic gas can be fatal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Indoor Comfort Systems HVAC urges you to turn it off and calling us at 215-741-5505. Excessive natural gas in your furnace or a ruptured heat exchanger are critical troubles that require prompt repairs.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to move warm air around your house. If the ductwork wasn’t put in correctly or is getting old, 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 Indoor Comfort Systems HVAC at 215-741-5505 and we’ll determine the problem.

2. Furnace Making a Buzzing Noise

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

Your furnace relies on an internal transformer to work on the right voltage. If wires or the box needs to be tightened, you may detect a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves hot or cold air across your rooms, and a capacitor, which turns on the motor. If either of these parts are failing, they will buzz when the furnace starts.

3. Furnace Rattles

If your furnace is making a rattling noise, it could be related to something minor, like a loose screw, or something serious, like a broken piece. In either case, we urge you to shut your furnace off and calling our heating professionals at 215-741-5505 for assistance.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s attempting to tell you it needs some TLC. If you’ve neglected furnace maintenance recently, belts could be worn out or a bearing may need to be lubed. We are aware that maintenance frequently slips your mind, but our techs 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 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 sensing noise, Indoor Comfort Systems HVAC can help. It’s critical to get loose ductwork fixed fast, because it can result in comfort problems in your home and inflate your heating expenses.

6. Furnace Making a Grinding Noise

It’s not a positive sign if you hear 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 now and contact our professionals at 215-741-5505 for assistance.

When you’re noticing an uncommon noise from your furnace, Indoor Comfort Systems HVAC is available to help. Contact us at 215-741-5505 to book your furnace repair appointment today.