the 51W15 furnace door switch prevents accidental exposure to high-voltage components and moving parts during routine filter changes or diagnostic testing

Built for durability in high-demand residential and light commercial environments

utilizing this 165 degree limit switch ensures the appliance maintains its original design specifications and safety ratings during service and repair modules

Key Benefits: Precise Thermal Response: The 350-degree trip point provides a reliable safety barrier against excessive heat in the burner compartment

a normally closed circuit is required for ignition

Reznor 131987 Venter Wheel the 51W15 furnace door switchThe Reznor 131987 Venter Wheel is a critical OEM replacement part, specifically the FE125 inducer wheel, engineered for high performance combustion air management. For contractors servicing Reznor gas fired unit heaters, this 4 3 4 inch centrifugal blower wheel features a 1 4 inch bore and CCW (counter clockwise) rotation. Constructed from galvanized metal, it is built to resist corrosion and maintain structural integrity under the high thermal cycles