Lochinvar & A.O. Smith 100144980 Fan Assembly 320720-756 Always verify furnace part compatibility

Always verify furnace part compatibility by checking the inducer mounting pattern and transition dimensions

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

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

Does this valve include a built-in end switch for the boiler

Lochinvar & A.O. Smith 100144980 Fan Assembly 320720-756 Always verify furnace part compatibilityThe 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