Radiator BTU Calculator

How to calculate the BTU heat output you need for the space you want to heat?

The term 'BTU' (British Thermal Unit) is used to reference the heat output of all the designer radiators we offer. Using the radiator calculator below you can work out how much radiator heat you need. 


How to use the Radiator BTU Calculator

There are several factors which can affect this, such as room dimensions, insulation quality of the room, any additional heating (e.g. a kitchen is likely to have an oven, where as a bedroom is likely to be unoccupied so little other heat). Once you have answered the questions in the calculator you may find the space needs more than one radiator to heat the room efficiently. 


Use this handy calculator to calculate the BTU/hour.

1. Your Room Dimensions
2. Insulation Quality
3. Select Room Type
4. Select Unit to Output
5. Calculate BTU Rate
6. Result

BTU / hour