Franz San Galli (Russian: Франц Карлович Сан Галли, Franz Karlovich San Galli) (1824–1908) was a Russian businessman who invented the radiator, which significantly contributed to modern central heating systems. Born in Stettin (Prussian Pomerania, now Szczecin), he was mostly of Italian and German descent. He spent most of his life in St. Petersburg (Russia's capital at the time), where he ran his business and developed his inventions.[1]