Willis Carrier
Willis Haviland Carrier (November 26, 1876 – October 7, 1950) was an American engineer, best known for inventing modern air conditioning. Carrier invented the first electrical air conditioning unit in 1902. In 1915, he founded Carrier Corporation, a company specializing in the manufacture and distribution of heating, ventilation, and air conditioning (HVAC) systems.
Charles Gordon Curtis
Charles Gordon Curtis (April 20, 1860 in Boston – March 1953 in Central Islip, Suffolk County, New York) was an American engineer, inventor, and patent attorney. He is best known as the developer of the eponymous Curtis steam turbine.