Every time your thermostat calls for heat, the furnace runs a fixed checklist. The inducer motor starts and proves draft by closing a pressure switch, the hot surface igniter heats up, the gas valve opens, the burners light, and the flame sensor confirms there is fire. Only after all of that does the blower begin sending warm air into the house. Finding the step that fails is most of the job. Around Bowling Green, KY, the usual failure points are a flame sensor fouled with oxide, an igniter cracked by years of heating and cooling, a pressure switch that stays open because of a weak inducer or a clogged condensate trap on a high-efficiency unit, and control boards with burned relays. Any one of them halts the startup, and from the hallway they all look alike.
For air conditioning breakdowns, see AC Repair.
Signs You Need Furnace Repair in Bowling Green
Spotting the early warning signs lets you act before the problem gets expensive. Here are the most common indicators that it's time to call a professional:
- Grinding or high-pitched squeals from the blower
- Yellow, wavering burner flames where they should be sharp blue
- Loud booms at startup caused by delayed ignition
- Air moving through the vents that never gets warm
- Water, rust stains, or black soot around the flue or cabinet
- Repeated shutdowns just seconds after the burners light
- Clicking and a glowing igniter with no burner flame
- Short cycling every few minutes without reaching the setpoint
Early Action Saves Money
What seems like a minor issue today can take out a compressor or heat exchanger tomorrow. At the first hint of a problem, call (270) 400-7974 for a fast inspection.
