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.
Charles Gilbert Gates
Charles Gilbert Gates (May 26, 1876 – October 29, 1913) of Minneapolis, Minnesota, who had owned the first home in the United States where air conditioning was installed in 1914. He was the son of John Warne Gates, also known as "Bet-a-Million" Gates.