This cooler box is designed to assist humans in getting cold drinks when traveling long distances by car. Semi-conductor cooler box components consist of TEC1-12706 and TEC1-12715, styrofoam box with a size of 53 × 31 × 43 cm, copper and aluminum processor heatsinks, fans with 12V and 1A voltage, acrylic, and retaining bolts. The lowest temperature that can be achieved by TEC1-12706 and TEC1-12715 is 23.7 • C which is reached in 60 min. The efficiency possessed by TEC with a heatsink 77.8%. Maintenance for the semi-conductor cooler box is very easy by not using a voltage that exceeds 12 V and it is not expected to disassemble the cooling component circuit consisting of the heatsink and TEC.