Universal Cross-Reference: Replaces multiple legacy parts including 1017743S

this model is strictly for single-stage 1H/1C applications

carbon soot buildup on the sensor element

The York S1-025-41336-000 Limit Switch is a critical OEM replacement part engineered for high-precision thermal monitoring in residential and light commercial furnaces

Lennox 16A52 Gas Valve 326070-701 Universal Cross-Reference: Replaces multiple legacyThe Lennox 16A52 Gas Valve is a critical OEM replacement component engineered for precise fuel regulation in high efficiency natural gas heating systems. This 24V gas valve is designed to meet the rigorous factory standards of Lennox, Armstrong, and Ducane equipment, ensuring seamless integration and reliable ignition cycles. With a 35" WC pressure rating, it provides the stable manifold pressure necessary for clean combustion and optimal thermal