Calculates the required BTU (British Thermal Units) for an air conditioner based on room size and other factors.
Start with your values, or try a preset.
Enter Room Area (square feet), Insulation Quality, Sun Exposure, and Typical Occupancy (number of people) in the units shown.
Read Occupancy Factor, Sun Exposure Factor, Insulation Factor, Base BTU Requirement, Total BTU Requirement, and Recommended AC Size in the results panel. Results update as you change the inputs.
Choose a preset to load an example, then adjust the values for your situation.
See the inputs and their calculated results.
Room Area (square feet): 150; Insulation Quality: Average; Sun Exposure: Moderate; Typical Occupancy (number of people): 1
Occupancy Factor: 100; Sun Exposure Factor: 1; Insulation Factor: 1; Base BTU Requirement: 3,000; Total BTU Requirement: 3,100; Recommended AC Size: 3100 BTU
Room Area (square feet): 300; Insulation Quality: Good; Sun Exposure: Little; Typical Occupancy (number of people): 2
Occupancy Factor: 200; Sun Exposure Factor: 0.95; Insulation Factor: 0.9; Base BTU Requirement: 6,000; Total BTU Requirement: 5,330; Recommended AC Size: 5330 BTU
Room Area (square feet): 600; Insulation Quality: Poor; Sun Exposure: Lots; Typical Occupancy (number of people): 4
Occupancy Factor: 400; Sun Exposure Factor: 1.1; Insulation Factor: 1.1; Base BTU Requirement: 12,000; Total BTU Requirement: 14,920; Recommended AC Size: 14920 BTU
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