In a standard room with 8-foot ceilings, use these estimations:
• 8,000 BTUs will cover 200 sq. ft. (1,600 cubic feet)
• 10,000 BTUs will cover 300 sq. ft. (2,400 cubic feet)
• 2,000 BTUs will cover 400 sq. ft. (3,200 cubic feet)
• 13,000 BTUs will cover 450 sq. ft. (3,600 cubic feet)
• 14,000 BTUs will cover 500 sq. ft. (4,000 cubic feet)