Reznor 43845 Motor/Wheel Assy 320720-756 the 'S' suffix typically denotes

the 'S' suffix typically denotes a service part or a superseding part number that maintains the same electrical specifications and physical dimensions as the original factory component

Reliable Paddle Seal: The Buna N paddle design provides ANSI Class IV seat leakage protection for efficient energy management

Reliable Performance: Forged brass construction stands up to aggressive water conditions and demanding mechanical environments

ensuring reliable performance in extreme thermal environments

utilizing this genuine York expansion valve ensures matched port sizing and pressure drops

Reznor 43845 Motor/Wheel Assy 320720-756 the 'S' suffix typically denotesThe Reznor 43845 Motor Wheel Assy is a drop in 115V Inducer Motor Wheel Assy designed for critical combustion management in commercial and industrial heating applications. This OEM draft inducer replacement is engineered to handle the high static pressure requirements of the Reznor HRPD series, including HRPD 250, 300, 350, 400, and 500 models. As a veteran technician knows, maintaining the correct airflow across the heat exchanger is non negotiable