Ventilation and energy consumption. Practical experience of problems related to ventilation in single family houses.

Discusses the problems of designing ventilation for small houses. Small houses are considered to be far too elementary and there is no total view of the balance of energy and no regard for the interplay between different flows. Mechanical ventilation is often not controlled or inspected in small houses. Recommendations are: increased knowledge, differentiated requirements on ventilation, inspection of systems, definition of comfort criteria, changed conditions for heat recovery, and well-documented requirements for air tightness.