What size should I choose?
This question is crucial when purchasing a new radiator. To be more precise, it's about the heating performance. If it is too high, this wastes energy. Larger radiators also require more space. If they are too small, you'll find yourself freezing in winter. You'll need to calculate the heating need for each room prior to purchasing. A heating engineer can usually do this for you.
The radiator size alone is not responsible for your room being hot or cold. Sometimes this can be down to the wrong settings.
No Model Dimensions - The Secret Triple Combination 70/55/20
We're familiar with 90/60/90 as the dream size of fashion models, so what does 70/55/20 mean? Radiators are available in different sizes with varying heating performance.
To choose the right heating, you'll need to know the heating requirements in a room. This can depend on the flow temperature and return flow temperature of the heating appliance.
If we take the above example of 70/55/20, the first number represents a flow temperature of 70°C. The return flow temperature is then 55°C once the room has heated up to 20°C.
A double row radiator with this heating circuit temperature has a heating output of 2000 Watts as per manufacturer specifications.
Modern radiators are more frequently operated at lower temperatures. At 55/45/20, the heating output of the same radiator will be reduced to 1250 Watts, for example.
In this case, to achieve the same output requires a larger radiator. According to manufacturer specifications, a triple row flat panel radiator for example has an output of 1950 Watts at 55/45/20 and so has a similar heat output to a double row radiator at 70/55/20.