Air conditioning
Modern air conditioning emerged from advances in chemistry during the 19th century, and the first large-scale electrical air conditioning was invented and used in 1902 by US inventor Willis Carrier. The introduction of residential air conditioning in the 1920s helped enable the great migration to the Sun Belt in the United States.
Walter P. Chrysler Jr.
In 1934, Chrysler founded the Airtemp division of Chrysler Corporation, which developed the first automotive air-conditioning system. After establishing worldwide distribution, he transferred the patent to the parent company but remained a director. In the following year he became president of the Chrysler Building; he continued in that position until 1953.