Fans caught on rapidly. By 1910, Westinghouse was marketing an electric fan for household use with the claim that the electricity to operate it would cost only one-fourth of a penny per hour.
Self-contained window fans, made of plastic instead of metal, were introduced in 1934 by Vent-Axia, a British company. In 1937, the development of a new plastic laminate for coating fan blades, Micarta, made fans quieter and less likely to warp or corrode.