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Bard part number 8000-400 is an OEM scroll compressor (Copeland ZP49K5E-PFV-130) used in select Bard wall mount air conditioners and heat pump systems to circulate and compress R-410A refrigerant for proper cooling capacity and efficiency. This is a critical sealed-system component, so matching the compressor model and electrical rating to your unit data and service literature is essential before ordering. When a compressor has failed, best practice is to address root causes such as airflow issues, charge problems, contamination, or electrical faults, and to follow standard sealed-system procedures like proper evacuation, filter drier replacement, and correct oil and refrigerant handling to help protect the new compressor and restore reliable operation.