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.
August Luebs
August A. Luebs (February 28, 1889 – September 8, 1989) was an American mechanical engineer and an expert on air conditioning and heating. He pioneered the science of air conditioning in the early part of the twentieth century.