Who invented the swamp cooler?

The swamp cooler, also known as an evaporative cooler, does not have a single inventor but rather evolved over time through various designs and improvements. Ancient civilizations, such as the Egyptians and Persians, utilized basic forms of evaporative cooling by hanging wet mats in front of Windows. The modern version, however, was popularized in the mid-20th century, particularly in arid regions of the United States, where its efficiency in cooling was widely recognized.