York Parts S1-37323870001 Heat Pump Defrost Control KitThe York Parts S1 37323870001 Heat Pump Defrost Control Kit delivers reliable defrost control for York heat pumps and compatible HVAC systems. This precise replacement component is designed to manage defrost cycles, helping maintain efficient heating and cooling and preventing frost buildup on outdoor coils. As a dedicated defrost control kit, it serves as a straightforward HVAC replacement part for many York units, supporting smooth transitions

it helps maintain system responsiveness and reduce downtime across demanding manufacturing settings

Connections are 1/4 in female threaded

supporting efficient ignition and stable combustion conditions

Includes orifice and is UL/CSA/CE listed with Cv 13

control size 9 in

industry-grade electrical wiring harness that supports efficient system performance

The brass fusible valve design provides a dependable automatic shutoff

This Normally Opened

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straight-through design for efficient flow

Designed for use on standard combination gas control valves

Replacement part for Reznor 195036 unit heaters