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The Bard 5202-003 suction accumulator is an OEM refrigerant-side protection component used on Bard wall-mounted air conditioners and heat pumps to help prevent damaging liquid refrigerant from returning to the compressor during off-cycle or low-load operation. This 5/8 inch connection accumulator supports stable system performance by separating liquid from suction vapor and managing oil return so the compressor is better protected from floodback. If you are replacing a leaking or restricted accumulator, confirm the connection size, refrigerant type, and the exact Bard model and serial number before ordering, since accumulator sizing and piping configuration can vary by unit.