When performing a commercial HVAC door repair

Whether you are performing a pressure test on a new installation or replacing a failed analog pressure gauge in an existing manifold

providing a reliable point of control for electric baseboard heaters and fan-forced systems

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

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

Lochinvar & A.O. Smith 100109941 Ignitor 323055-751 When performing a commercial HVACThe 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