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BTU Calculator

What size radiator do I need - use Dougfields BTU calculator to find out?

Height of room (metres) *:
Width of room (in metres) *:
Length of room (in metres) *:
Window area (in metres²):

Type of room *:
Space above room:
Outside walls:
Window type:
Number of external walls:

Imperial to Metric Converter

feet   inches = metres





Now you know what size radiator you require check out our Apollo radiator range at discounted prices