The York 17506 Pressure Switch (models 9371VO-HD-0003, 565227/00086) is a dual pressure switch designed for precise airflow and safety monitoring in York HVAC systems. It activates and deactivates at 1.05" WC (on rise) and 0.40" WC (on fall), ensuring accurate system control and reliable furnace operation. Built to meet York?s OEM specifications, this switch helps prevent overheating and improper combustion by ensuring proper draft and pressure levels. Key Features: Genuine York OEM dual pressure switch. 1.05" WC on rise / 0.40" WC on fall for precise pressure control. Dual function for high and low pressure monitoring. Ensures safe furnace ignition and operation. Factory-tested for durability and long service life. Specifications: Part Number: 17506 (9371VO-HD-0003 / 565227/00086) Type: Dual Pressure Switch Pressure Settings: 1.05" WC (close on rise), 0.40" WC (open on fall) Mounting: Horizontal/vertical options Terminals: Standard 1/4" quick-connect Application: Furnace air proving and draft pressure control Manufacturer: York (Johnson Controls) Compatible Models: GM9S100C20DH11, GY9S120D20DH11A, GF9S100C16DH11, GM9S080B12DH11, GF9S060B12DH11A, FL9S100C16DH11, PS9C20N100DH11A, PS9B12N080DH11, X4N322ABD4A3ABDEA1, Z33EC02M5KANEH0001, Z33EC02H5IANCH0001, and more. Why Choose This Item: The York 17506 Dual Pressure Switch provides accurate airflow and safety control, protecting your furnace from improper operation and ensuring peak efficiency. Designed to York?s strict OEM standards, it delivers dependable performance, straightforward installation, and long-term reliability?a must-have replacement for maintaining safe and efficient HVAC system function.