The very first building to ever use air conditioning units to both cool and heat the air was the New York Stock Exchange. This took place in 1902. Later that year, Willis Havilland Carrier installed the very first electrically-run air conditioning unit at a printing plant. The unit not only cooled the air but also controlled the humidity.We all know that air conditioning makes you feel cool, but there is more to it than just cooling us down. It means keeping the temperature and humidity… Continue