Calculate your required BTU & Watts Our BTU calculator provides and upper and lower range based on the selected room.

Please Note: This is just a guide for reference only. Larger rooms, such as living rooms may require more than one radiator positioned throughout the room. If this applies to you, divide the required output between the number of radiators required.

Measurement type
Room Dimensions
Select Room
Window Type
Room Exposure

ΔDelta T50 BTU required: - Watts required: -

This calculation is shown as a range to take into account variables such as external temperature and insulation levels in the home.
We advise that the combined heat output of all the radiators in a room meets the higher end to ensure that the room is heated evenly and efficiently.

Contact our friendly sales team today on 02394 216 216. We will be more than happy to assist you on the specific heating requirements of your home.