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 start pushing warm air into the house. Finding the step that fails is most of the job. Around Spring, TX, 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.
When the AC quits in summer, see AC Repair.
Signs You Need Furnace Repair in Spring
Spotting the early warning signs lets you act before the problem gets expensive. Watch for these telltale signs:
- Repeated shutdowns just seconds after the burners light
- A fan that keeps running while the registers blow cool air
- The furnace clicks and glows but the burners never light
- Soot, rust, or moisture near the furnace cabinet or vent pipe
- A pilot or burner flame that is lazy yellow instead of crisp blue
- A bang or boom when the burners ignite late
- A furnace that shuts off every few minutes before the house warms up
- Squealing or grinding from the blower compartment
Early Action Saves Money
Left unchecked, even a small fault or temperature swing often signals a system working its way toward a breakdown. If you notice any of these signs, call (281) 270-1633 for a prompt inspection.
