York S1-025-37499-000 Flame Sensor Using a genuine HH12HA163 limit

Using a genuine HH12HA163 limit switch ensures correct calibration and response times

High Visibility: Features a high-contrast scaleplate for accurate temperature setpoint monitoring in low-light mechanical rooms

Built to withstand the high-cycle demands of residential and light commercial HVAC systems

the kit includes a packet of high-grade silicone gel necessary for ensuring the O-rings and quad rings slide correctly into place without tearing during installation

Universal Locking Design: Prevents unauthorized setpoint adjustments

York S1-025-37499-000 Flame Sensor Using a genuine HH12HA163 limitThe York S1 025 37499 000 Flame Sensor is a critical OEM safety component engineered for precise flame rectification in high efficiency gas furnaces. As a veteran grade HVAC replacement part, this sensor utilizes a high quality stainless steel rod designed to withstand extreme thermal conditioning without premature oxidation. It is the primary safeguard in the combustion cycle, ensuring the integrated furnace control board receives a steady DC