The York S1-025-38950-000 Flame Sensor is a critical safety component designed for furnace ignition systems

the switch opens the circuit to the gas valve or control board

always verify that the temperature ratings on the existing switch match the 155°F/125°F specifications before installing

which is essential for consistent ignition and reliable flame rectification

installing an incorrect propeller fan can result in high head pressure or motor failure

Reznor 87434 Ventor Motor Freon The York S1-025-38950-000 Flame SensorThe Reznor 87434 Ventor Motor is a critical 115V replacement component engineered specifically for Reznor unit heaters. Operating at a standard 115 volt single phase input, this draft inducer motor is designed to pull combustion gases through the heat exchanger, ensuring proper venting and preventing pressure switch trip outs. As a direct mechanical match for specific Reznor power vented units, it maintains the necessary CFM output and static pressure