York S1-031-01146-700 Control Module Els PW 17895 As a normally closed (NC)

As a normally closed (NC) 2-way valve

making it a critical stock item for retrofitting older pneumatic systems

reducing service call duration

20 mm brass orifice plug is manufactured to strict tolerances to ensure a consistent fuel-to-air ratio

York S1-031-01146-700 Control Module Els PW 17895 As a normally closed (NC)The York S1 031 01146 700 Air Handler Control Module is an essential integrated component for managing residential air handling systems, specifically optimized for the York NACS FD10AA and DB71AC models. As a veteran grade HVAC replacement part, this module serves as the primary logic hub, coordinating communication between the thermostat, blower motor, and heating cooling stages to ensure stable airflow and system efficiency. Field built for