This International Standard gives calculation methods for assessment of the annual energy use for spaceheating and cooling of a residential or a non-residential building, or a part of it, referred to as “the building”.
EN ISO 13790:2008 history
2008EN ISO 13790:2008 Energy performance of buildings - Calculation of energy use for space heating and cooling (ISO 13790:2008)
2004EN ISO 13790:2004 Thermal performance of buildings Calculation of energy use for space heating