The Nordyne 632595 Pressure Switch is a reliable HVAC safety component designed to monitor pressure levels in furnace systems. It operates by sensing the negative pressure created by the inducer motor and activating or deactivating the circuit when pressure reaches the specified range of -0.65" to -0.28" WC. This pressure switch is commonly used in Nordyne furnaces and heating equipme... https://www.partshnc.com/632595-nordyne-65-28-pressureswitch