Williams Furnace Company introduces the newest addition to their series of comfort products — three models (7,400-29,400 Btu/hr) of High-Efficiency Direct-Vent Furnaces. The High-Efficiency Direct-Vent Furnace is designed as a high-efficiency, low-profile furnace that may be installed nearly anywhere in a home, apartment, office or garage. These furnaces require no inside air for operation, making them an ideal choice for safe operation to add comfort to nearly any place heat is needed.