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The Bard 900-375-0186BX Programmed Blower Assy is an OEM indoor air-moving assembly used in select Bard wall-mount and packaged HVAC units to deliver the correct airflow across the indoor coil and through the duct or discharge, which helps maintain proper temperature control and protects the system from nuisance limits caused by low airflow. Because this is a programmed blower assembly, it is intended to match specific factory performance and control requirements, so it is a smart choice when replacing a failed blower section or correcting airflow-related issues after verifying the exact model and serial compatibility on your Bard unit nameplate or in the service manual.
Bard uses suffixes like "BX" to manage parts internally. These do not change the physical form or function of the part.
A part number ending in "BX" simply means it is packaged in a box for shipping, rather than for internal assembly use.
Example: 8406-142BX is physically identical to 8406-142.