Space Radiator Size Calculator

Calculator inputs

Use the grid below. Large screens show three columns, smaller screens show two, and mobiles show one.

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Room length (m)

Room width (m)

Room height (m)

Indoor design temperature (°C)

Outdoor design temperature (°C)

Exposed wall area (m²)

Window area (m²)

Door area (m²)

Wall insulation level

Glazing type

Floor condition

Ceiling condition

Door type

Air changes per hour

Safety factor

Supply water temperature (°C)

Return water temperature (°C)

Radiator type

Radiator height