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BTU Calculator

Use this calculator to find the BTU (energy) requirement to heat your room. We'll then show you a selection of products that match your requirement.

Which room would you like to heat?

Living Room

Dining Room





What are the dimensions of the room?

How insulated is the room?



The BTU requirement for this room is between

For larger rooms, consider splitting your heat output into multiple radiators to avoid cold spots in a room.

Please note that all calculations are approximate; for more accurate results a heating engineer should be consulted.