Lennox 24L26 Limit Switch The York S1-024-35978-000 Pressure Switch

The York S1-024-35978-000 Pressure Switch is a critical safety component designed for precise differential air pressure monitoring in York

60" WC rating is specific to the venting design of the furnace

making it a reliable choice for field repairs where exact tolerances are required to maintain motor winding integrity and cooling performance

commonly managing blower motors and heating elements

This part number refers to the 120V coil itself

Lennox 24L26 Limit Switch The York S1-024-35978-000 Pressure SwitchThe Lennox 24L26 Limit Switch is a critical OEM furnace safety control engineered for high static environments and precise thermal monitoring. This automatic reset limit switch is designed to protect the heat exchanger and blower assembly from thermal runaway by interrupting the burner circuit when temperatures reach the 200F high limit trip point. Once the plenum cools to the 160F reset temperature, the switch automatically closes to resume normal