York Parts S1-02435271000 Gas Furnace Air Pressure SwitchThe York Parts S1 02435271000 Gas Furnace Air Pressure Switch delivers reliable safety control for your York furnace. This essential York furnace part monitors combustion air pressure to prevent unsafe operation and provides a dependable HVAC replacement part for maintenance or upgrades. Designed to integrate with compatible York gas furnaces, this air pressure switch supports gas furnace safety by protecting against flame rollout, improper venting,

energy-efficient performance by sequencing heating and cooling stages with accurate response and compact installation footprint

leak-tight install

HW 4" Filters

PD200 gas-fired unit heaters

This AM-731 linkage kit delivers 220 Lbf-duradrive capability

Enclosure: Plastic (UL 1955)

this replacement uses standard connectors for quick field installation

delivering consistent temperature regulation

Durability: Extruded aluminum blade

Reliable solenoid actuation for HVAC and process applications

Type coil construction ensures reliable electromagnetic actuation

or assembly