Dynamic Heating Calculator

If you need an idea of how much heat you need for a room, please use the guide below. Please bear in mind the calculator works with square or rectangular rooms only, and calculations returned should be taken as a simple guide. If you would like a more detailed assessment please contact our technical design team.

All measurements are in metres (m). Click in any box for a visual aid on the diagram.

(If the room has more than one outside wall, please add the lengths together to calculate the total.)


Width (m)Height (m)
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(Standard size doors - patio or french doors count as 2)