The High-Efficiency Direct-Vent Furnaces are available in three models: 7,400-29,400 Btuh. The furnaces, model series 07735, 17735, and 29035, are designed as high-efficiency, low-profile furnaces that may be installed nearly anywhere in a home, apartment, office, or garage. The furnaces require no inside air for operation, making them an ideal choice for safe operation to add comfort to nearly anyplace heat is needed, says the company. They are available in natural gas and propane models. Features include a wall-mount design, which frees up floor space; electronic ignition; and an air-to-air system, offering instant heating. The vent adapter accessory (17735 and 29035 series) is used to compensate for the extra space left around the vent hole when replacing a furnace with a larger vent opening. It can also be used to extend the flue terminal on homes with vinyl siding so that the vent cap lies flush against the edge of the siding. Furnace options include an umbrella holder, fragrance holder, towel warmer, and warming tray.

Williams Furnace Co., 250 W. Laurel St., Colton, CA 92324-1435; 909-825-0993;