How many kW does my radiator produce?

Output depends on type (11, 21, 22, 33), height and length. A Type 22 600x1000mm produces approximately 1.5 kW at 75/55°C.

What does Type 11, 21, 22, 33 mean?

This indicates the number of panels and convectors. Type 22 has 2 panels and 2 convectors, Type 11 has 1 panel and 1 convector.

Calculate the heat output (kW) of your radiators. Based on Henrad Standard specifications at 75/55°C system temperature.

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75/55°C Specifications

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Per Radiator Calculation

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Total kW Overview

Want to calculate expansion vessel size too?