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.
Thomas Fowler (inventor)
Fowler patented the thermosiphon in 1828 (British patent number 5711). It was the first convective heating system. A system based on his design was installed at Bicton, part of the Rolle Estate and received great acclaim in the "Gardener's Magazine" of 1829. Unfortunately due to innate flaws in the patent system of the time (under which a new version of a design with minimal changes was not covered by the original patent), the thermosiphon was copied by numerous other manufacturers and Fowler did not have sufficient funds to conduct legal proceedings.