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.
Elie Aghnides
Aghnides' first major invention was the faucet aerator, which is a standard part of nearly all faucets today, in 1943. He said he got the idea from watching a waterfall. He also had a number of related patents throughout the years stemming from his original invention. This invention and its subsequent modifications and additions made him very wealthy. He kept luxury apartments in both New York City and Paris.