The direct-vent Energy Pro Gas Fireplace delivers a lot of bang per Btu, with an annual fuel utilization efficiency (AFUE) of 92.6%. It’s also certified as a central furnace, with cutouts on top for four supply ducts, each of which can carry heated air as far as 50 feet with a maximum of three elbows. The unit can be ordered with a wireless thermostat and various mantel options. It costs $7,400.
Hearth & Home Technologies, 888/427-3973, heatnglo.com.