York S1-024-39717-000 Pressure Switch 0.45″ 2-Stage

Description

York S1-024-39717-000 Pressure Switch — 0.45″ 2-Stage

The York S1-024-39717-000 is an OEM replacement pressure switch engineered for 2-stage York furnace systems. Designed to monitor and verify proper draft pressure during furnace operation, this switch plays a critical safety role — preventing ignition unless the correct negative pressure is established by the inducer motor. With a set point of 0.45″ water column (W.C.), it is precisely calibrated to match the performance specifications of compatible York equipment.

Key Features

• OEM York replacement pressure switch for accurate, reliable fit
• Set point: 0.45″ W.C. (water column)
• Designed for 2-stage furnace operation
• Monitors inducer draft pressure to ensure safe ignition sequencing
• Helps protect against improper combustion and heat exchanger damage
• Direct drop-in replacement for compatible York furnace models

Why Replace Your Pressure Switch?

A faulty pressure switch is one of the most common causes of furnace lockout and no-heat calls. The pressure switch verifies that the draft inducer is operating correctly before allowing the ignition sequence to proceed. Using a genuine York OEM replacement like the S1-024-39717-000 ensures the switch meets the exact electrical and pressure specifications required by your equipment — protecting both the system and the end user.

Compatibility

This pressure switch is intended for use with York 2-stage furnace models. Always verify compatibility with your specific unit’s model and serial number before installation. Consult the equipment’s wiring diagram and service manual for proper installation procedures.

Application

• Residential 2-stage gas furnaces
• York OEM replacement part
• Inducer draft pressure sensing