Reznor 123974 Fan Switch Els PW 17895 The Watts 0274934

The Watts 0274934

Field Proven Durability: Standardized Johnson Controls pneumatic parts footprint for rapid retrofit or replacement

Key Benefits Precision-Balanced Design: Reduces harmonic vibration to extend the service life of the condenser motor and bearings

In total darkness

while exceeding the rating can cause excessive winding current and premature motor failure

Reznor 123974 Fan Switch Els PW 17895 The Watts 0274934The Reznor 123974 Fan Switch is a precise thermal control engineered for gas fired unit heaters and duct furnaces. Designed to manage blower cycles based on internal heat exchanger temperatures, this F135 30F fan control ensures the fan engages when the plenum reaches 135F and terminates operation once it cools to 105F (30F differential). As a direct replacement for part 48706, it maintains the critical timing required to prevent heat exchanger stress