10. What are the Correction Factors in the radiator data chart?

We display radiator outputs in accordance with European Standards, at a radiator to air temperature differential of 50°C. However the hotter the radiator is above the room’s air temperature, the more heat it will emit. A typical UK heating system has an average radiator temperature of around 75°C and, if a room temperature of 20°C is required, there is a temperature difference between the radiator and the air of 55°C. Simply look at the technical data of the required radiator and apply the correction factor for 55°C to the heat output shown to ascertain the correct heat output of the radiator. The data chart shows correction factors for a wide range of radiator to air temperature differentials.