Lochinvar & A.O. Smith 100208391 Pressure Switch 322057-301 optimized for older HVAC system

optimized for older HVAC system troubleshooting and maintenance

High-Flow Performance: The 36H series provides the highest capacity in the White-Rodgers lineup

Manufactured from high-grade steel

OEM Standards: Guaranteed physical fit and electrical compatibility with York S1-025-27747-018 systems

ensuring the branch circuit meets NEC requirements for HVAC electric heater kits

Lochinvar & A.O. Smith 100208391 Pressure Switch 322057-301 optimized for older HVAC systemThe Lochinvar & A. O. Smith 100208391 Pressure Switch is a mission critical safety component designed for precise pressure monitoring within high efficiency boilers and water heaters. Engineered to meet rigorous OEM specifications, this 0. 21" W. C. air pressure switch functions as a blower prover, ensuring the combustion blower is generating sufficient airflow before allowing the ignition sequence to proceed. By supervising the differential pressure