Lochinvar & A.O. Smith 100145003 Fan Assembly 323269-701 Negative Pressure Optimized: Specifically counter-sprung

Negative Pressure Optimized: Specifically counter-sprung to prevent unrequested valve opening in high-velocity pull-through burner designs

When performing routine maintenance or troubleshooting a slow-fill issue

the standard shaft coupler accommodates 1/2" to 3/4" round shafts or 3/8" to 1/2" square shafts

and C) to simplify wiring during emergency service calls

5-inch ceramic body and a 1/2-inch NPT threaded connection for precise seating within the burner housing

Lochinvar & A.O. Smith 100145003 Fan Assembly 323269-701 Negative Pressure Optimized: Specifically counter-sprungThe Lochinvar & A. O. Smith 100145003 Fan Assembly is a high performance combustion blower engineered for precise air fuel ratio management in commercial water heaters and boilers. This direct replacement blower motor assembly is identical to part number FAN3030 and serves as a critical component for maintaining consistent thermal efficiency. Designed for compatibility with high efficiency Lochinvar Knight and A. O. Smith Cyclone series, this assembly