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The Bard 900-399-0243BX Programmed Blower Assy - Boxed is an OEM indoor air-moving assembly used in select Bard wall-mount and packaged HVAC units to restore proper airflow across the evaporator coil and maintain correct system operation. Because this is a programmed blower assembly, it is intended to match the specific control settings and performance profile required by the unit, helping prevent issues like low airflow, coil icing, nuisance limit trips, and comfort complaints after a motor or blower failure. If you are replacing a failed blower or dealing with inconsistent airflow, ordering the correct programmed assembly by part number is the safest way to ensure plug-in compatibility with the existing wiring and controls and to get the unit back to factory-correct operation.
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.