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 Kennewick, WA, 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. Each one halts the startup, and from the hallway they all look alike.
For air conditioning breakdowns, see AC Repair.
Signs You Need Furnace Repair in Kennewick
Recognizing the warning signs early can save you time and money. These are the signals our technicians see most often:
- Squealing or grinding from the blower compartment
- The blower runs constantly but the air never warms
- A bang or boom when the burners ignite late
- Yellow, wavering burner flames where they should be sharp blue
- Rust streaks, soot, or water around the cabinet or flue
- Clicking and a glowing igniter with no burner flame
- Burners light, run a few seconds, then shut down repeatedly
- Short cycling every few minutes without reaching the setpoint
Act Before It Gets Worse
A failing capacitor, clogged condensate drain, or dirty flame sensor rarely fixes itself and usually gets more expensive to address the longer it runs. Call (541) 634-9853 at the first sign of trouble.
