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The first air conditioning unit, invented by Willis Carrier, A engineering masters student from Harvard.
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History of the A/C
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The first air conditioners were being used in industrial workshops to help cool products, and employees.
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The first non-industrial A/C, used by department stores and entertainment hubs to keep customers cool.
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By 1928 Carrier had invented the 'WeatherMaker', The first safe home air conditioner.
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The first cars with A/C units were created.
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On June 17, 1946, the Carrier Engineering Corporation sold the rights for A/Cs to many different organisations. These organisations, such as KiKiKool and Ruud, were what made Air Conditioners as we now think of them, able to cool huge spaces with very precise control.
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The first A/Cs to go down to the one hundredth mark on a thermometer were invented by the Kholor Corporation in 1998.
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The first A/C units that could simply be plugged in were created in 2002.