How Many Square Feet Will A 80000 BTU Furnace Heat?
How Many Square Feet Will A 80000 BTU Furnace Heat? 80 X 1,000 square feet = 80,000 BTUs. What size furnace do I need for a 2000 square-foot house? A mid-sized home of 2,000 square feet would need approximately 50,000 to 60,000 Btu to heat it properly. With a less efficient furnace operating at 80