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The 1986 edition of Dr. John Watt's Evaporative Air Conditioning Handbook identifies the origins for modern American evaporative cooling as either from the East Coast or Southwest. In the early 1900s, air washers were invented in the East and air coolers were developed in Southwest (Arizona and California).
The ice cooler from the 1960âs until the last 10 years got stale. They became household items, with companies like Igloo becoming one of the staple brands selling as many as 20 million coolers/year.