boiler systems

as long as the mechanical stop aligns with the stroke path

Engineered to provide accurate resistance feedback to the integrated furnace control or heat pump logic board

Calibrated Range: Provides a stable 12" to 28" water column (WC) adjustment window for mid-pressure applications

this Zettler relay ensures consistent electrical switching and circuit stability during heavy-duty operation

York S1-026-34726-001 Limit Switch boiler systemsThe York S1 026 34726 001 Limit Switch is a critical safety component designed for precise thermal regulation within York, Luxaire, and Coleman HVAC systems. This SPST (Single Pole Single Throw) fixed temperature switch operates on a 110 140F automatic reset cycle, meaning it breaks the electrical circuit if the plenum temperature exceeds 140F and restores continuity once it drops to 110F. As a direct replacement for S1 2702 314P A, this OEM component