Collaboration between IEA EBC ventilation related annexes
Ventilation and air infiltration into buildings represent a substantial energy demand which can account for between 25% to over 50% of a building's total space heating (or cooling) needs. Unnecessary or excessive air change can therefore have an important impact on global energy use. On the other hand insufficient ventilation may result in poor indoor air quality, with consequential health problems, or poor thermal comfort. Designing for optimum ventilation performance is hence a vital part of building design.
