York S1-024-39718-000 Pressure Switch 0.90 In. W.C. 2-Stage

Description

York S1-024-39718-000 Two-Stage Pressure Switch Overview

The York S1-024-39718-000 is an OEM replacement pressure switch engineered for two-stage York furnace systems. Rated at 0.90 inches of water column (In. W.C.), this switch monitors the negative pressure produced by the inducer motor to confirm safe draft conditions before allowing ignition to proceed — a critical safety function in modern gas furnaces.

Key Features

• OEM York replacement part — ensures precise fit and reliable performance
• Rated set point: 0.90 In. W.C. for accurate draft pressure sensing
• Designed for two-stage furnace operation for enhanced comfort and efficiency
• Monitors inducer motor performance to verify proper venting before ignition
• Helps protect against unsafe combustion conditions caused by blocked flues or failed inducers
• Direct drop-in replacement minimizes installation time

Application

This pressure switch is designed for use in compatible York two-stage gas furnaces. It works in conjunction with the inducer blower assembly to confirm adequate negative pressure in the heat exchanger and venting system. If proper draft is not established, the switch prevents the ignition sequence from initiating, protecting both the equipment and building occupants.

Why Choose OEM York Parts?

Using genuine York OEM replacement components like the S1-024-39718-000 ensures your system operates within its original design specifications. OEM parts provide the correct calibration, connector compatibility, and material quality needed for long-term reliability — reducing callbacks and repeat service visits.

Part Information

• Brand: York
• SKU / Part Number: S1-024-39718-000
• Type: Pressure Switch
• Set Point: 0.90 In. W.C.
• Stage Configuration: 2-Stage