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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).
Refrigeration completely wiped out the ice-box industry. Who Invented The Refrigerator. The first inventor of the refrigerator was Oliver Evans in 1805, however William Cullen invented the process in 1748 and Jacob Perkins invented more practical improvements in 1834.