
How to Size a Commercial Air Conditioner
If you have a 5,000squarefoot space, divide that number by 500 to get 10. 10 times 12,000 is 120,000 Btu. If four people work there, add 1,520 (380 Btu x 4). If the space has three windows, add 3,000 (1,000 Btu x 3). This space will need a commercial A/C size with 124,520 Btu of cooling. Remember, however, that air