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ASHRAE / ISHARE Standard Formulas
Advanced AC Tonnage Wizard
AC Tonnage Calculator
Get the exact AC capacity for your room — based on size, climate, occupancy, and more. 5-step precision sizing.
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Room Dimensions
Enter length, width and ceiling height
Room Visualizer
Enter dimensions above
🔵 Windows2
🟢 AC Unit position1
📐 Ceiling height10 ft