BTUs are 'British Thermal Units', the unit in which radiator efficiency is measured. Factors such as room dimensions, window size and and aspect are used to calculate the required outputs of radiators to adequately heat a room.
BTUs are 'British Thermal Units', the unit in which radiator efficiency is measured. Factors such as room dimensions, window size and and aspect are used to calculate the required outputs of radiators to adequately heat a room.