British Thermanl Unit or BTU for short is a measure of heat output. We believe it is the best way to work out what size radiator or how many radiators you will need in a room. There are many factors to consider when calculating BTU such as room dimensions, room type, windows and orientation. Please feel free to use our BTU calculator below to work out what radiators you will need.
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Frequently Asked Questions
- What is BTU output?
BTU stands for British Thermal Units and it represents the level of heat a radiator provides.
This figure is calculated by taking into account the dimensions of your room and the type of windows the room has.
- How do I calculate the BTU’s needed for my room?
Our BTU calculator will help you work out which radiator will most effectively heat your room. BTU stands for British Thermal Units and it represents the level of heat a radiator provides
You will need to consider the type of room you are trying to heat. A bathroom, kitchen, bedroom, living room or hall?
This is because different rooms will generally require a slight difference in temperature.
Start by measuring the length, width, and height of the room in meters.
Next you will need to consider some additional information on heat loss, this will be through any windows or doors. Are they single or double glazed?
You can then input this information into our easy to use BTU calculator to work out the best radiator for your room.