OEM Lennox Gas Valve — 97N56

The genuine OEM Lennox 97N56 gas valve precisely regulates the flow of fuel to your furnace burners. Working under the direction of the ignition control, it opens to admit gas only when the system calls for heat and ignition is confirmed, then meters the correct pressure for clean, efficient combustion and closes instantly to shut off fuel when the cycle ends. Built to Lennox specifications, the 97N56 delivers the exact flow rating and safety response your equipment depends on.

Warning signs of a failing 97N56 include a furnace that won't ignite, burners that fail to light or light unevenly, a gas smell, delayed ignition with a small "whoomp," short cycling, or no heat despite a working igniter and control board. Because it directly governs fuel delivery, a faulty gas valve is both a common no-heat cause and an important safety component.

Installing an OEM Lennox gas valve is essential because gas valves are calibrated for specific pressures and fuel types — a mismatched aftermarket valve can cause dangerous over- or under-firing. The factory 97N56 guarantees correct calibration, exact fit, and preserves your warranty. For safety, installation must be performed by a licensed HVAC technician.