Lennox 66J78 Limit Switch Els PW 17895 Pre-wired color-coded leads reduce installation

Pre-wired color-coded leads reduce installation time and prevent wiring errors

Contractors should verify the vacuum hose integrity and millivolt circuit continuity when installing this factory-authorized sensing device to restore system efficiency and safety compliance

OEM Direct Fit: Designed specifically as a drop-in replacement for York S1-025-26366-008

This HVAC expansion valve body is a serviceable TXV spare part

Its foot mount design ensures a stable

Lennox 66J78 Limit Switch Els PW 17895 Pre-wired color-coded leads reduce installationExperienced HVAC contractors recognize the Lennox 66J78 Limit Switch as a critical safety component for maintaining furnace integrity and preventing heat exchanger damage. This OEM Lennox replacement part is a 36T series disc style control designed for High Limit or Secondary Rollout applications. It features a Normally Closed (NC) circuit that opens on temperature rise to interrupt the heating cycle if internal temperatures exceed safe operating