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 start pushing warm air into the house. Finding the step that fails is most of the job. Around Warwick, RI, 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 Warwick
Catching these issues early helps you avoid costly problems. Watch for these telltale signs:
- Burners light, run a few seconds, then shut down repeatedly
- Frequent on-off cycling that never reaches the thermostat setting
- The furnace clicks and glows but the burners never light
- A flame that burns soft and yellow rather than steady blue
- Grinding or high-pitched squeals from the blower
- Rust streaks, soot, or water around the cabinet or flue
- A fan that keeps running while the registers blow cool air
- A bang or boom when the burners ignite late
Don't Wait for a Total Failure
What seems like a minor issue today can take out a compressor or heat exchanger tomorrow. If you notice any of these signs, call (401) 204-0640 for a prompt inspection.
