System Efficiency: Eliminates air leaks at the drain point

and 25-micron particulate efficiently

ensuring precise manifold pressure regulation and reliable furnace gas valve ignition sequences

allowing you to reuse the existing nuts for a fast swap in the field

Nordyne 632550R Pressure Switch 318973-401 System Efficiency: Eliminates air leaksThe Nordyne 632550R Pressure Switch is the genuine OEM replacement for the legacy 632550 model, specifically engineered for high efficiency Nordyne furnace units and related HVAC systems. As a critical safety component, this normally open (NO) pressure switch is factory calibrated to a 1. 0" WC make and 0. 7" WC break setpoint. It utilizes a negative pressure diaphragm to verify the draft inducer motor is generating sufficient static pressure before