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 Buffalo, NY, 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.
When to Call for Furnace Repair in Buffalo
Recognizing the warning signs early can save you time and money. These are the signals our technicians see most often:
- Yellow, wavering burner flames where they should be sharp blue
- Frequent on-off cycling that never reaches the thermostat setting
- Booming or banging at light-off from delayed ignition
- A fan that keeps running while the registers blow cool air
- Squealing or grinding from the blower compartment
- Flames that start, last a few seconds, and go out again and again
- Clicking and a glowing igniter with no burner flame
- Rust streaks, soot, or water around the cabinet or flue
Early Action Saves Money
A failing capacitor, clogged condensate drain, or dirty flame sensor rarely fixes itself and usually gets more expensive to address the longer it runs. If you notice any of these signs, call (716) 203-8998 for a prompt inspection.
