HVAC Load Calculator

Calculate heating and cooling loads for your space

Room Parameters

Room Dimensions

Length (m)

Width (m)

Height (m)

Temperature Settings

Indoor Temperature (°C)

Outdoor Temperature (°C)

Wall Properties

Wall U-Value (W/m²K)

Window Area (m²)

Window U-Value (W/m²K)

Door Area (m²)

Door U-Value (W/m²K)

Roof U-Value (W/m²K)

Floor U-Value (W/m²K)

Internal Loads

Number of Occupants

Lighting Density (W/m²)

Equipment Density (W/m²)

Solar Gain (W/m²)

Ventilation

Air Changes per Hour (ACH)

Ventilation Efficiency

Load Calculation Results

Wall Heat Loss

-202.0 W

Window Heat Loss

-145.6 W

Door Heat Loss

-65.0 W

Roof Heat Loss

-65.0 W

Floor Heat Loss

-78.0 W

Ventilation Heat Loss

-96.1 W

Occupant Heat Gain

200.0 W

Lighting Heat Gain

200.0 W

Equipment Heat Gain

300.0 W

Solar Heat Gain

400.0 W

Required Cooling Capacity

0.45 kW

This is the minimum cooling capacity needed for your space

Required Heating Capacity

1.75 kW

This is the minimum heating capacity needed for your space

Room Air Changes

0.01 m³/s

This is the ventilation rate for your space