York S1-026-34028-001 Limit Switch This manual reset thermal switch

This manual reset thermal switch is the direct factory authorized replacement for legacy part numbers 239-43676-03 and 100167474

please consult the specific valve rebuild kit documentation to ensure proper fitment

Frequent tripping is usually caused by restricted airflow

Please contact our team to confirm compatibility or technical details before purchasing

York S1-026-34028-001 Limit Switch This manual reset thermal switchThe York S1 026 34028 001 Limit Switch is a critical furnace safety control designed to protect HVAC systems from high temperature excursions. This automatic reset limit switch features a 155F opening threshold and a 125F closing point, ensuring the primary heat exchanger remains within safe operational parameters. As an OEM York replacement part, this component provides the high performance reliability required for both residential and light