OEM Lennox Integrated Furnace Control Board Kit — 84W24

The genuine OEM Lennox 84W24 integrated furnace control (IFC) board kit is the central brain of your Lennox furnace. It manages the entire heating sequence — inducer operation, igniter warm-up, gas valve timing, flame verification, and blower on/off delays — while continuously monitoring safety limits and pressure switches. This complete kit includes the control board and necessary hardware for a direct factory replacement.

Common failure symptoms: A failing 84W24 board often shows up as a furnace that won't ignite, short-cycling, no blower operation, flashing diagnostic LED fault codes, intermittent no-heat calls, or a system that locks out after several ignition attempts. Power surges, moisture, and corroded relays are frequent causes of board failure.

Why OEM matters: The furnace control board coordinates every safety and timing function in your equipment. The factory 84W24 is programmed with the exact ignition sequences, timings, and fault logic your Lennox model expects, ensuring safe operation and preserving warranty coverage. Generic or reflashed boards can misfire the ignition sequence or bypass critical safeties — risks that are never worth taking with gas-fired equipment.