HVAC Load Calculator

Part of: Calculators →

✓ Enter your values and get an instant, accurate result
✓ Formula and working shown — no black-box calculations
✓ Useful for everyday decisions, academic work, and professional estimation
✓ Free, no account, no installation required

HVAC Load Calculator

Room Length (ft): Room Width (ft): Room Height (ft): Insulation Type: Number of Occupants:

HVAC Load: 0.00 BTU/h

Volume: 0.00 cubic feet

Base Load: 0.00 BTU/h

Occupant Load: 0.00 BTU/h

How to Use the Hvac Calculator

Read the input labels carefully — enter the values they describe.
Use the correct units for each field — check the unit labels before entering numbers.
Click Calculate to see your result.
Review the formula or method shown to verify the calculation makes sense.

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HVAC Load Calculator