OEM Lennox Two-Stage Gas Valve 1/2" x 1/2" — Y7763

The genuine OEM Lennox Y7763 is a White-Rodgers 36J54-214 two-stage gas valve with 1/2" x 1/2" pipe connections, designed for HSI (Hot Surface Ignition) and DSI (Direct Spark Ignition) systems with a fast-open action. It regulates gas flow to the burners across two firing rates, allowing your Lennox furnace to run on low stage for quiet, efficient heating and switch to high stage when demand increases for maximum comfort.

Common symptoms of a failing two-stage gas valve include the furnace being stuck on a single stage, no ignition on one or both stages, delayed or rough ignition, short cycling, or an audible clicking with no gas delivery. You may also see error codes at the ignition control pointing to a valve or flame-sense fault.

Installing an OEM Lennox Y7763 valve ensures the correct staging logic, manifold pressures, and 24V operation your furnace was engineered for. Because gas valves are safety-critical and precisely calibrated to gas type and equipment, using the genuine White-Rodgers replacement protects reliable two-stage performance, proper combustion, and the safety certification of your Lennox system.