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BTU Radiator Heat Output Calculator

Please use the following form to calculate the BTU (energy) requirement of your room.

Room Details

Please select your room type:


Please select your room exposure status:


Please select your window glazing status:



Your results



For larger rooms we do strongly suggest that you consider splitting your heat output into multiple radiators. Having multiple radiators will avoid any unwanted coldspots in a room. 

* Please note that all calculations are approximate; for more accurate results please call us on 01257 452879 to arrange a consultation with one of our friendly heating engineers.