In 1906, Stuart W. Cramer of Charlotte was exploring methods to include dampness to the air in his textile mill. Cramer coined the term "air conditioning", making use of it in the patent assert he submitted that calendar year being an analogue to "drinking water conditioning", then a perfectly-recognized system https://docs.google.com/spreadsheets/d/1sFkX-195bzbspltn6kI7pJAwHC_IWJIWy0giWMghe84