Use the following guide to achieve the most accurate estimates.
Heat Load Factor = 1 for storage warehouse
Heat Load Factor = 1.25-2 for distribution warehouse (Example: Amazon)
Heat Load Factor = 1.5-2.5 for Plastics Factory - depends on number of extruders/sq ft of open space
Calculation assumptions: 25 BTU per Cubic foot
You may adjust the 25 BTU/FT3 by adjusting the Head Load Factor
This calculator uses the standard conversion factor of 1 ton = 12,000 BTU/hr