System Protection: Effectively shields your residential or commercial air handler from internal rust and moisture

Streamlines the transition from manual operation to automated valve control in tight mechanical footprints

and installation hardware to ensure a secure environmental seal and reliable heater diagnostic codes communication for long-term field stability

ensuring sensitive and accurate regulation even at extremely low pressure differentials

Lochinvar & A.O. Smith 100109941 Ignitor 323055-751 System Protection: Effectively shields yourThe Lochinvar & A. O. Smith 100109941 is a high grade Hot Surface Ignitor (HSI) engineered for precision ignition in high efficiency commercial and residential water heaters. This silicon carbide ignitor serves as the direct OEM replacement part for legacy numbers 9004566105 and 9004566115. Designed to withstand extreme thermal cycling, this component ensures reliable burner light off in Lochinvar Knight and A. O. Smith Cyclone series units. The