Its CCW (Counter-Clockwise) Lead End Rotation is critical for ensuring the blower assembly maintains proper static pressure and airflow delivery throughout the ductwork

making it an essential component for maintaining system efficiency and preventing liquid floodback

What units use this specific blower wheel

This model is the direct replacement for 43-25133-05

Consult the official Reznor pressure tables for your specific elevation

Lochinvar & A.O. Smith 100281571 Thermopile Assembly 328140-751 Its CCW (Counter-Clockwise) Lead EndWhen you're dealing with a pilot that won't stay lit or a gas valve that refuses to engage on a Lochinvar or A. O. Smith unit, the 100281571 Thermopile Assembly is the critical millivolt replacement part you need. This OEM thermopile is engineered to convert thermal energy from the pilot flame into a precise electrical signal, typically around 750 millivolts, to power the electromagnetic coil within the gas control valve. It is a vital component for