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More improved air conditioner
In 1922, he followed up with the innovation of the centifugal chiller, which added a central compressor to reduce the unit size. -
The first air conditionitoner made
In 1902, a 25 year old engineer from New York named Willis Carrier invented the first modrn air-conditioning system. The mechanical unit, which sent air through water-cooled coils, was not aimed at human comfort, however; it was designed to control humidity in the printing plant where he worked.