This study explores the principle of producing cold through heat absorption at a temperature lower than ambient temperature, which requires the use of an endothermic mechanism. Specifically, the study focuses on evaluating multiple thermoelectric coolers using aluminum water heat exchangers as a means of validating a proposed correlation through a series of experiments. The system utilizes water as a coolant and a thermoelectric cooler coupled with a heatsink to cool it. The cooling power of the system is controlled by adjusting the temperatures of the hot and cold heatsinks and the coolant flow through the heat exchanger based on governing equations. In addition to assessing the cold-side temperature, the research also investigates the system COP of the thermoelectric system. The results indicate that a thermoelectric cooler with a lower thermal resistance is more effective at cooling and can achieve a lower cold-side temperature. Conversely, a cold-side heatsink with a higher thermal resistance provides lower cooling power. Two experiments were conducted to acquire comprehensive data on the thermoelectric devices, and the obtained results and experience were used to categorize the utilization of the Peltier model. The first experiment achieved an 84% success rate, while the second experiment achieved a rate of around 97- 95%, highlighting the potential for further experimentation with alternative configurations.