The York S1-024-25994-000 Pressure Switch is a critical safety component designed for precise vent pressure monitoring within York furnaces and HVAC systems

Using it with ammonia will degrade the pressure element and internal seals

Key Benefits for Technicians: System Protection: Actively monitors high-side pressure to prevent R-410A compressor damage

As a veteran-grade OEM Nordyne part

the A17534 is built to withstand the rigors of commercial and industrial HVACR environments

Carrier 921003 Adapter Kit 319825-402 The York S1-024-25994-000 Pressure SwitchThe Carrier 921003 Gas Valve Adapter Kit is a specialized interface solution designed for HVAC technicians performing system upgrades or gas valve replacements. This OEM authorized kit facilitates a secure, leak free connection between gas valve bodies and various manifold or floor mounted configurations. Engineered for furnaces and boilers requiring low NOx emissions (40 nanograms joule or less), the 921003 is crucial for maintaining compliance in