Present work involves designing and fabricating the three-stage humidifier test rig where three Celdek 7090 packings are arranged vertically at equidistance, forming a multistage humidifier. Water flow rate and airflow rates are regulated to obtain required humidification under both single pad and three pad configuration. Output variables like coefficient of performance, evaporation rate, cooling effect, cooling efficiency and pressure drop are determined. Results indicated that three stage packing gave high performance compared to the single stage. Change in temperature, change in humidity, saturation efficiency & coefficient of performance values are 6.5°C, 44%, 80% and 2.1 respectively, are the maximum values noticed for the multistage humidifier. The study indicated that with the increase in rate of water flow, there is an rise in performance parameters till a water flow rate of 0.6 liters per minute, and after this value, performance deteriorates. Even though multistage performs better than a single stage, as the number of stages increased, the stage-wise performance declines.