Trane KIT17858 HSI Control 30067439-890 Technician-Friendly Design: Features extended 1

Technician-Friendly Design: Features extended 1 1/8" sweat connections for easier brazing in tight mechanical spaces

While the 0556003 is built for durability

Substantial Capillary Reach: The 36-inch capillary tube provides flexibility for remote mounting in complex control panels

High BTU Rating: Rated at 1

Engineered specifically for compatibility with Reznor unit heaters and power vented gas furnaces

Trane KIT17858 HSI Control 30067439-890 Technician-Friendly Design: Features extended 1The Trane KIT17858 is a critical 24V 2 stage HSI control board designed for high performance furnace platforms requiring precise ignition sequencing and blower motor management. This integrated furnace control manages the hot surface igniter, gas valve timing, and multi speed inducer motors to ensure optimal combustion efficiency. Engineered as a direct OEM replacement kit, it provides seamless compatibility for technicians sourcing a Trane ignition