The European Standard provides guidance for managing ventilation in heritage buildings, or buildings housing collections, in order to achieve adequate preservation of building fabric and objects they contain while at the same time creating an indoor environment that allows for a sustainable use of these buildings. The standard is a complement to existing general standards for ventilation in buildings focusing on human comfort. This European Standard can also be used to support selection of heating strategies and heating systems for heritage buildings, or buildings housing collections (for guidelines for heating churches, chapels and other places of worship, see EN 15759-1).