From the hallway, a furnace that will not heat looks the same no matter what broke. Inside the cabinet, though, the sequence is strict: inducer on, pressure switch closed, igniter glowing, gas valve open, burners lit, flame proven, and finally the blower sending heat through the house. Diagnosis is mostly a matter of finding where that chain breaks. In Overland Park homes, it tends to be the same handful of culprits: a flame sensor coated in oxide, a hot surface igniter cracked by thermal cycling, a pressure switch held open by a tired inducer or a plugged condensate trap, or a control board with a burned relay.
When the AC quits in summer, see AC Repair.
Signs You Need Furnace Repair in Overland Park
Catching these issues early helps you avoid costly problems. Here are the most common indicators that it's time to call a professional:
- The igniter glows and clicks, yet no flame ever appears
- Frequent on-off cycling that never reaches the thermostat setting
- Booming or banging at light-off from delayed ignition
- Repeated shutdowns just seconds after the burners light
- Grinding or high-pitched squeals from the blower
- A flame that burns soft and yellow rather than steady blue
- Rust streaks, soot, or water around the cabinet or flue
- A fan that keeps running while the registers blow cool air
Don't Wait for a Total Failure
What seems like a minor issue today can take out a compressor or heat exchanger tomorrow. Call (913) 452-5463 at the first sign of trouble.
