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Bard 800-0188BX is an OEM Heating Cap Tube Assembly (boxed) used as the fixed metering device in the heating circuit of select Bard wall mount and other packaged HVAC equipment. This capillary tube assembly helps regulate refrigerant flow and pressure drop so the system can deliver stable heat output and protect the compressor during operation. When a cap tube is restricted, leaking, or damaged, symptoms often include poor heating performance, abnormal pressures, or frosting issues, and replacing it with the correct Bard factory part helps restore proper refrigerant metering and dependable heat pump operation. Verify model and serial compatibility before ordering, since cap tube sizing is application-specific.
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.