and AF-3 airflow switch series

ensures the manifold pressure is properly regulated for propane’s higher BTU content

this high-limit switch ensures seamless integration with compatible residential and commercial units including specific York

Field technicians rely on its modular design and robust relay construction for consistent staging control in harsh HVACR environments

specifically fitting several medium and large frame displacements

York S1-025-29041-001 Limit Switch and AF-3 airflow switch seriesThe York S1 025 29041 001 Limit Switch is a critical OEM safety component engineered for precise thermal monitoring in high efficiency furnace and air handling units. Specifically designed as an Auto Reset Limit Switch, it features a 3 inch probe insertion to accurately gauge plenum temperatures. This HVAC high limit control is calibrated to trigger at a high end threshold of 220F and reset at 190F, preventing heat exchanger damage and ensuring safe