Genuine OEM Component: Specifically manufactured as an ICP 1149856 Pilot Assembly to ensure exact voltage requirements and mounting alignment

this SPDT air pressure sensing switch is factory-calibrated to operate on a pressure rise at 0

is a critical OEM replacement part that ensures your equipment runs within design parameters

this genuine HVAC furnace control board ensures the unit maintains factory-spec operational parameters

manufacturers typically recommend replacing the 100327014 sensor if it has been exposed to a significant vapor incident to ensure accurate future readings

Lochinvar & A.O. Smith 100288429 Switch 319825-402 Genuine OEM Component: Specifically manufacturedThe Lochinvar & A. O. Smith 100288429 Switch is a critical safety component designed for precise air pressure sensing in high efficiency heating systems. This OEM replacement part is factory calibrated to a 3. 90" water column (WC) set point, serving as a primary air proving switch to ensure the blower motor is moving sufficient combustion air before the ignition sequence begins. Engineered for compatibility with specific Lochinvar boilers and A. O.