With radiators, the BTU measurement refers to how much energy is required to heat a particular room. The higher the BTU number is, the greater the radiator’s heat output will be. How effective the radiator will be though depends on factors such as the size of the room and how well insulated it is. A radiator’s ability to transfer heat will depend on its material, size and surface area as well as the water temperature within the system.
Click the link below to learn more about BTU and heat output. You will also find a link to our BTU Calculator to work out your room's BTU requirement to understand how much heat your radiators need to emit in order to heat the room effectively.