Lochinvar & A.O. Smith 100144980 Fan Assembly 320720-756 As a veteran-grade replacement for

As a veteran-grade replacement for the L-307-1

this is an 825 RPM motor

verifying the 42 frame diameter (5 inches) is essential to avoid fitment issues common with larger 48-frame alternatives

ensuring a significantly quieter burner tray during startup and modulation

Lochinvar & A.O. Smith 100144980 Fan Assembly 320720-756 As a veteran-grade replacement forThe Lochinvar & A. O. Smith 100144980 Fan Assembly is a high performance inducer fan assembly engineered specifically for high efficiency condensing boilers and water heaters. This 115V, 50 60HZ OEM component is critical for maintaining precise combustion air blowers performance in KnightXL KBN600 800, Armor AW600 800, and SYNC SB1300 1500 series units. As a veteran technician knows, ensuring consistent venting airflow is paramount for safe operation