by Mark Hansberger on October 30, 2018October 15, 2018 A History of the Modern Furnace The history of furnaces in the U.S. reflects advances in heating fuel as well as furnace technology. Without functional indoor heating, some regions of the country would be at least very uncomfortable in winter while […]Read More Filed Under: Furnaces Tagged With: furnaces– history– history furnace– home comfort– home safety– HVAC history