Every time your thermostat calls for heat, the furnace works through 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 Westland, MI, the usual failure points are an oxide-coated flame sensor, 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 Westland
Catching these issues early helps you avoid costly problems. Watch for these telltale signs:
- Air moving through the vents that never gets warm
- A pilot or burner flame that is lazy yellow instead of crisp blue
- Grinding or high-pitched squeals from the blower
- Soot, rust, or moisture near the furnace cabinet or vent pipe
- Short cycling every few minutes without reaching the setpoint
- Loud booms at startup caused by delayed ignition
- Clicking and a glowing igniter with no burner flame
- Flames that start, last a few seconds, and go out again and again
Early Action Saves Money
What seems like a minor issue today can take out a compressor or heat exchanger tomorrow. If you notice any of these signs, call (734) 215-6893 for a prompt inspection.
