Heat load calculator

Estimate the cooling capacity a space needs to pre-size the equipment.

This is an estimate for pre-sizing. The component-based calculation gives an order of magnitude (±15%). For a final quote, run a detailed load study taking into account the room's real orientation, materials and insulation.

Room floor area (m²)

Exposure / insulation

Number of people

Activity

Installed lighting (W) — optional

Equipment / electronics (W) — optional

Safety factor (%)

Estimated capacity

0 BTU/h

0 kW 0 TR 0 frig/h

Breakdown

Envelope + sun0 W

People0 W

Lighting0 W

Equipment0 W

Safety factor0 W

Save this calculation in the project record

With Lissi you document every sizing and keep it linked to the customer and the installed equipment.

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