Abstract: An improvement for a refrigeration system that includes a refrigerant circuit and a compressor with condenser assembly. The improvement is a pre-cooling device connected to the output of the condenser and includes an inlet and two outlets. The inlet is connected to a serpentine at one end and the other end is connected to one of the outlets. The other outlet is connected to the device housing above the bottom concavity where the liquid refrigerant is collected. The serpentine comes in at least partial contact with the refrigerant and in that manner pre-cooling the refrigerant going through the serpentine.