Water being the principal fluid in the evaporative cooling process, the Evaporative Cooler is, therefore, eco-friendly without any emissions and biohazards because of the complete abstinence from toxic, harmful, and hazardous gases such as ammonia or CFC. Thus, however small or big, a high performance, continuously operated, and running Evaporative Cooler does not contribute to environmental pollution, ozone depletion as with water as a natural refrigerant and with significantly less consumption of electricity, the emission of carbon is also negligible. Lastly, by the sheer mechanism, evaporative cooling ensures ventilation and proper airflow which results in a marked improvement of the indoor air quality in comparison to the stale and polluted air re-cycled in mechanical cooling.