OEM Lennox Gas Valve — 17H22

The genuine OEM Lennox 17H22 gas valve regulates the flow of natural gas or propane into the burners of your Lennox furnace. Working in concert with the ignition control, it opens to deliver a precisely metered gas supply during each heating cycle and closes to shut off fuel safely when the call for heat ends, making it one of the most critical safety and performance components in the appliance.

A failing 17H22 commonly shows up as a furnace that ignites intermittently or not at all, burners that fail to light, delayed or rough ignition, weak or uneven flames, or a complete no-heat condition. Because the valve controls both fuel delivery and gas shutoff, any malfunction should be addressed promptly to restore reliable, safe heating.

OEM matters because the 17H22 is engineered to the exact gas pressure regulation, wiring, and connection specifications Lennox requires for your furnace. Substituting a generic valve risks improper gas metering, poor combustion, and safety hazards. This factory replacement ensures correct pressure settings, a proper fit, and safe, efficient gas control for your Lennox system. Installation should always be performed by a qualified HVAC technician.