The engineer Willis Carrier died at the age of 73. Here is all you want to know, and more!
Biography - A Short Wiki
Engineer and inventor who is credited with inventing the modern system of air conditioning. After relocating his company (Carrier) from New Jersey and Pennsylvania to New York, he became one of the largest employers in the city.
He was married three times– to Claire Seymour, Jennie Martin, and Elizabeth Wise– but he fathered no children.