This R134a expansion valve (also compatible with R513A) features a compact

When you're dealing with combustion consistency in Goodman or Amana forced-air systems

Always verify if your specific unit requires a separate pull-out or breaker-integrated control base for installation

This OEM Sterling replacement part is field-proven for HVAC unit heater repair

The Nitrile (NBR) seal material provides excellent chemical resistance and durability for air

York S1-331-01975-001 Control Kit 30067439-890 This R134a expansion valve (alsoManaging frost accumulation on heat pump evaporator coils requires a reliable, logic driven solution rather than basic timed cycles. The York S1 331 01975 001 Demand Defrost Control Kit is a field proven OEM replacement board engineered to upgrade older, less efficient 031 01098 series controls. For contractors servicing York, Coleman, or Luxaire equipment, this heat pump defrost control utilizes a shunt jumper system to select precise defrost