HVAC Capacity Calculator
Estimate heating/cooling capacity for rooms or workshops. Free online HVAC sizing calculator with instant results and professional recommendations.
Input Parameters
Calculation Result
Calculation Formula
Room Volume (m³) = Area (m²) × Ceiling Height (m)
Cooling Load (kW) = (Volume × 0.04 + Occupancy × 0.1) × Climate Factor
Heating Load (kW) = (Volume × 0.05 + Occupancy × 0.12) × Climate Factor
Recommended Capacity = Cooling Load × 1.2 (20% safety margin)
Note: This is a simplified calculation. For accurate sizing, consult HVAC professionals.
Example Use Case
50 m² room with 3m ceiling, 5 occupants, climate factor 1.2 → Cooling: 5.4 kW, Heating: 6.2 kW, Recommended: 6.5 kW