Warm areas up to 1,300 sq. ft. such as the larger rooms in your home with the Williams Forsaire 55,000 BTU Propane Direct-Vent Furnace. The counter-flow blower system of this propane furnace heats air at both the ceiling and floor levels for equal temperature distribution throughout your room. A wall-mounted thermostat is included for temperature regulation. Rated for elevations 0 - 2,000 ft.