Install the Maxitrol 12A34 to ensure code-compliant indoor venting for your RV81 series gas pressure regulators

maintaining the static pressure integrity of the sealed combustion system

or a ruptured internal diaphragm within the switch itself

Unlike standard rubber seals that fail under thermal stress

unlike mechanical relays that must be mounted perfectly upright

York S1-025-26366-006 Switch Install the Maxitrol 12A34 toThe York S1 025 26366 006 Fan & Limit Switch is a mission critical component engineered for precise thermal regulation within York, Coleman, and Luxaire gas fired furnaces. This HVAC fan limit switch performs a dual function role: cycling the blower motor to optimize airflow and providing essential furnace high limit control to protect the heat exchanger from structural damage due to overheating. By utilizing a factory calibrated bimetal sensing