Determine BtuH needs using table at right. The table does not include people or equipment loads. Add 600 BtuH per person. For heavy shade, reduce by 10%. For sunny spaces, increase by 10%. For use in a kitchen, add 4000 BtuH. Energy StarŪ-qualified room air conditioners are 10% more energy-efficient than conventional models. EER (energy efficiency ratio): The higher the number, the more efficient the unit.

STANDARD 8-FT. CEILING Area to be Cooled (Sq. Ft.) Capacity Needed (BtuH) for An Unoccupied Space 100 to 200 5000 to 6000 200 to 400 6000 to 12,000 400 to 600 12,000 to 18,000 600 to 800 12,000 to 20,000 800 to 1100 15,000 to 26,000 1100 to 1300 17,000 to 32,000 1300 to 1500 20,000 to 36,000