Smith Motors UB09CWHA2F Brushless DC Fan Motor

Smith Motors UB09CWHA2F is a compact 9‑watt brushless DC unit‑bearing HVAC fan motor designed for replacement in fan‑coil and air‑handler assemblies, delivering 1,550 RPM to move air with low noise. The model is documented in AO Smith/Century literature as a unit‑bearing motor with a TEAO (totally enclosed air over) enclosure and a 1/4‑inch diameter shaft with 20 threads per inch, a common footprint for replacement fitments in HVAC blower sections. This variant is intended for unit‑bearing applications in compatible equipment and is characterized by brushless DC operation that supports reliable, steady airflow in single‑speed configurations. Verified specs across catalogs include the 9 W power rating and the 1,550 RPM nominal speed, with at least one listing noting 230‑volt operation for this family of motors (some related listings show 115‑volt variants for closely related models). The shaft specification—1/4 in. with 20 threads per inch—supports standard mounting patterns, and the TEAO enclosure helps minimize external air leakage while enabling straightforward installation in standard replacement projects. In practice, UB09CWHA2F is best suited for replacing worn unit‑bearing blower motors in AO Smith/Century systems, offering a compact, efficient brushless DC option for maintaining consistent airflow in cooling and ventilation applications.