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This is a comprehensive field-mounting spring kit
the 5J-1 features a 1-inch finished bore with a standard 1/4" x 1/8" keyseat
Durable Construction: Engineered with a high-grade diaphragm and robust electrical contacts to handle frequent cycling in residential heating applications
providing seamless compatibility for contractors maintaining Freedom Series or C25 contactor assemblies
Precise Flow Control: Engineered Orifice Size 1 geometry ensures accurate pressure drop and mass flow for specific BTU/hr ratings
York S1-025-36115-001 Switch Els PW 17895 This is a comprehensive field-mountingThe York S1 025 36115 001 Air Proving Switch is a critical safety component engineered for York HVAC systems, including packaged rooftop units and residential furnaces. As an HVAC air pressure switch, it functions as a differential pressure sensor, monitoring the supply fan to ensure sufficient airflow before allowing ignition or cooling stages to engage. This OEM replacement part is built with a NEMA 1 electrical enclosure and is compatible with R