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First air conditioner

First air conditioner
Who
Willis Haviland Carrier
What
First
Where
United States
When
1902
US inventor Willis Haviland Carrier designed and built the first air conditioning system in 1902. It was devised for a printer in New York, USA, who had found that temperature fluctuations were causing his paper to warp, resulting in the misalignment of the coloured inks. Carrier's patent was granted in 1906.