Pressure Switch Assembly for ICP Furnaces 0.90" W.C. 1172823

The 0.90" W.C. Pressure Switch Assembly for ICP Furnaces (1172823) is an OEM FastParts replacement designed to verify inducer performance and ensure safe ignition sequencing in select ICP, Heil, Comfortmaker, Tempstar, and Day & Night 80% AFUE furnaces. This single-pole, normally open switch closes on pressure rise at approximately 0.90" W.C., confirming proper vent draft before the control board initiates burner operation. Compatible with N9MP, N8MP, and NDGK series furnaces, the 1172823 is factory-calibrated for precise pressure response and reliable system safety. It features a durable diaphragm assembly, reinforced thermoplastic housing, and quick-connect electrical terminals for straightforward replacement. Ideal for technicians servicing draft or ignition faults, this OEM pressure switch restores dependable furnace operation, accurate combustion control, and consistent performance in the field.