This European Standard is part of a series of standards on the method for calculation of system energy requirements and system efficiencies. The scope of this specific part is to standardise the: - required inputs; - calculation method; - resulting outputs for space heating generation by: a) air heating systems, including control, and b) overhead radiant heating systems for non-domestic use , including control. This European Standard does not apply to air heating systems that utilise water as a heat transfer medium.