The Portable Furnace by ARBACO is the absolute safest technology for generating clean, reliable and comfortable heat. 126 air venturies makes the Portable Furnace the most efficient heating unit on the market today. The Portable Furnace uses an average of 35% less energy than conventional gas furnace/baseboard systems. The combination of infrared lamps and the exclusive heat exchanger enables the Portable Furnace to heat an area up to 800 sq. feet. The Portable Furnace is a low maintenance heating solution housed in a beautiful wood cabinet.