The 2013 Conference of the Air Infiltration and Ventilation Centre, AIVC, was organized together with the 2nd Cool Roof Conference and the 1st Venticool Conference in Athens, Greece during September 2013. The theme of the Conference was ‘Energy Conservation Technologies for Mitigation and Adaptation in the Built Environment’. Almost 240 papers were selected and presented, describing the state of the art on ventilation, passive and low energy cooling, energy efficiency, urban energy problems and solutions, and cool roofs.