Cooling Load Calculator for HVAC Systems (Simple Method)

Cooling Load Calculator for HVAC Systems (Simple Method)

The Cooling Load Calculator helps HVAC engineers and designers estimate the cooling capacity required for a room or space. Cooling load calculation is essential for selecting the correct air conditioner or HVAC equipment size.


Cooling Load Calculator








Cooling Load Formula (Simple Method)

Cooling Load (W) = Room Area × 150 + Occupants × 120

This simplified method is suitable for preliminary HVAC design and quick capacity estimation. Detailed projects should use full heat load calculations.


Example Cooling Load Calculation

  • Room area = 50 m²
  • Occupants = 5
  • Cooling load = (50 × 150) + (5 × 120)
  • Total = 8.1 kW

Where Cooling Load Calculation Is Used

  • Air conditioner selection
  • HVAC system sizing
  • Commercial building design
  • Residential cooling estimation

Related HVAC Calculators


Disclaimer: This calculator provides a simplified cooling load estimate. Final HVAC equipment selection should follow detailed heat load calculations and applicable standards.