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Bard part number 8000-278BX is an OEM boxed scroll compressor assembly, identified by the manufacturer compressor number ZP31K5E-PFV-130, used in select Bard wall-mounted air conditioner systems. This compressor is the heart of the sealed refrigerant circuit and is responsible for pumping and compressing the refrigerant to restore proper cooling capacity and stable operation when a failed compressor has caused hard starts, breaker trips, abnormal noise, or poor performance. Because compressor replacements are application-specific, confirm the exact Bard model and serial compatibility and match the full compressor number before ordering, then follow proper HVAC procedures for evacuation, filter drier replacement, and refrigerant charging to protect the new compressor.
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.