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A brief history of modern air conditioning
In 1842, Florida physician John Gorrie used compressor technology to create ice, which he used to cool air for his patients in his hospital in Florida. He envisioned centralized air conditioning that could cool entire cities and was granted a patent in 1851 for his ice-making machine but could not get the money he needed to develop the machine. Dr. Gorrie died impoverished in 1855 and the idea of air conditioning faded away for 50 years.
In 1902 the first modern electrical air conditioning was invented in New York by Willis Haviland Carrier. Designed to improve manufacturing process control in a printing plant, his invention controlled not only temperature but also humidity. The low heat and humidity were to help maintain consistent paper dimensions and ink alignment.
In 1906, Stuart W. Cramer of Charlotte, North Carolina, USA, was exploring ways to add moisture to the air in his textile mill and coined the term "air conditioning". He combined moisture with ventilation to "condition" and change the air in the factories, controlling the humidity so necessary in textile plants.
Innovation in air conditioning technologies continue, with much recent emphasis placed on energy efficiency and improving indoor air quality.
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