How do I calculate my BTU requirement?
To use our onlineBTU/Watt calculator you need to have the room dimensions in foot; room width, length & height. There are other variables such as windows, room orientation and room insulation which affect the BTU value and these need to be considered when calculating the BTU value.
As a general rule, in order to heat 10.8 square foot (1 square meter room) to standard room temperature of 23 °C, the requirement is 100 watt which is equivalent to 341 BTU. For example, a 54 square foot (5 square meters) standard room without any other heating source would require a bathroom towel radiator with a BTU value of 1706 = 500 Watt.
Disclaimer: Our BTU / Watt calculator tool must be used as a guide only. We strongly recommend you to seek a professional advice for your precise heat output requirement. The potential heat output of our towel radiators listed within the product descriptions are based on 75°C central heating water temperature.