providing flexibility for fail-safe or non-fail-safe sequence of operations

Verify the part number on your existing motor or consult your furnace's service manual

This model is designed for standard 2H/1C heat pump systems

Sealing Performance: Outfitted with TFE/Teflon stem packing and EPDM gaskets to maintain a tight seal under thermal cycling

York S1-025-31978-000 Damper Actuator 30067439-890 providing flexibility for fail-safe orThe York S1 025 31978 000 Damper Actuator is a professional grade 24V HVAC actuator specifically engineered for high cycle performance in bypass and zone controlled systems. This OEM York replacement part provides the precise torque required to modulate damper blades, ensuring balanced static pressure and efficient airflow management across multiple duct zones. Built for seamless integration with zoning system controllers, the S1 025 31978 000