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The genuine OEM Lennox 16A52 gas valve controls fuel delivery to the burners in compatible Lennox gas furnaces and heating equipment. Coordinated with the ignition control and safety circuit, it opens on a call for heat, supplies gas at the correct manifold pressure for efficient combustion, and shuts off reliably at the end of the cycle or the moment a fault is sensed.
Common failure symptoms: Signs of a failing valve include no ignition, burners that light weakly or unevenly, delayed ignition, audible clicking without gas flow, short cycling, or an inability to hold set temperature. A valve stuck closed leaves the home without heat, and any gas odor or erratic firing warrants immediate service.
Why OEM matters: The 16A52 is calibrated to your unit's exact pressure and electrical requirements and is engineered to work seamlessly with Lennox safety controls. Universal replacements can demand adapters, deliver the wrong manifold pressure, or void the appliance listing. Installing the factory-specified valve restores precise, safe fuel control and keeps your Lennox system performing at its rated efficiency.