York Parts S1-02434612000 Gas Furnace Air Pressure SwitchThe York Parts S1 02434612000 Gas Furnace Air Pressure Switch ensures safe, reliable furnace operation. This essential replacement part for York systems monitors vent pressure to confirm proper draft before ignition, helping prevent unsafe starts and maintain efficient heating. With a preset air pressure range of 1. 20 0. 40 and a normally open (N O) configuration for safe deactivation, this switch supports accurate furnace control and protection

Size & Capacity: 2-1/8" L x 1-1/8" H

This rugged contactor is ideal for HVAC controllers

SPST NO relay output rated 30 A

allowing versatile plumbing options

Upgrade your boiler feed system with the SA21-38R Water Feeder Strainer Basket to ensure cleaner water and smoother operation over time

its rugged components withstand furnace heat cycles

Spring-return electric actuator

a 1/2 inch threaded connection

and CUR approvals for trusted safety

It’s engineered for residential and light commercial equipment

Whether you're repairing a single unit or stocking parts for a service fleet

Flanged x Flanged ends