Lennox 56W19 Control Board Els PW 17895 The 36N77 is built with

The 36N77 is built with high-strength materials to prevent premature failure from oxidation or vibration

Designed for two-position spring return control

170 inch ID

Field-Proven Durability: Robust construction designed to withstand the high temperatures and vibration levels found in condenser and air handler cabinets

System Efficiency: Maintains proper pressure differentials to prevent coil icing and maximize heat transfer

Lennox 56W19 Control Board Els PW 17895 The 36N77 is built withThe Lennox 56W19 Ignition Control Board, also identified as the Aire Flo R47582 001, is a critical OEM replacement component for single stage heating systems. This integrated furnace control manages the combustion sequence, including the hot surface ignitor (HSI), gas valve, and flame sensing rectification. Operating on a 24VAC (18 30 VAC) control circuit, this board is the direct replacement for 56W1901 and ensures high performance switching without