Lochinvar & A.O. Smith 100145019 Air Fan 318172-701 Rugged Construction: Built with a

Rugged Construction: Built with a cast bronze body and brass trim to withstand ANSI Class 250 pressure ratings

Operating at 6 Watts

Is this flange compatible with older Sure-Flex sleeves

this blower motor maintains structural integrity under the mechanical stress common in commercial hydronic HVAC environments

the Weil McLain 386-700-355 Combustion Chamber Kit is the required OEM solution for restoring thermal integrity

Lochinvar & A.O. Smith 100145019 Air Fan 318172-701 Rugged Construction: Built with aThe Lochinvar 100145019 Combustion Air Fan is a critical replacement component designed for high efficiency hydronic boilers and volume water heaters. Engineered for precise pre mix combustion air delivery, this centrifugal blower assembly ensures optimal air to fuel ratios across various firing rates. Originally sourced under part numbers such as Lochinvar FAN3032, it is compatible with select Knight XL and Copper Fin II models, as well as A. O.