600 BTU/ ft is what i have been told.
650 square feet
600 square feet.
At least 8000 btu
24,000 btu's
30 ft * 20 ft = 600 ft2
18,000-21,000 BTU's
36000 Btu
One Small room "144 Sq ft"
600 ft = 182.9 metres
usually around 400sq. ft room give or take
Too many variables as to R-factor in ceilings and walls and windows. The direct sun exposure. How many times per hour doors are opened, etc. But, with a ceiling height of 8 feet, roughly i ton (12,000 btu) will cool 600 sq. ft. Therefore, 25,000 is generally good for up to 1100-1200 sq. ft.