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The Bard 5202-025 suction accumulator is an OEM refrigerant-side protection component used in Bard wall-mounted air conditioners and heat pumps to help prevent liquid refrigerant from returning to the compressor during off-cycle and changing load conditions. This accumulator uses a 7/8 inch connection and a calibrated 0.055 inch orifice to meter oil and refrigerant back into the suction line at a controlled rate, supporting reliable compressor lubrication and reducing the risk of damage from floodback. If your unit shows signs of compressor noise after a repair, repeated compressor failures, or contamination after a burnout, replacing the accumulator with the correct Bard factory part number helps restore proper system protection and fit.