... and the height of a multi-storey building, are among the buildings with the greatest interior open space. Buildings of this size require special technology for energy-saving, effective and zone-specific heating, ventilation and cooling. Hoval is particularly suited to this task, with its indoor climate system. The flexible, decentralised devices are recognised the world over as technologically and qualitatively superior systems. At the Praemium Aerotec Works in Augsburg, Germany, ninety RoofVent LHW-9 fresh air units provide highly effective heating and ventilation in the hangar. In an efficient and pleasant manner, the Hoval Air-Injector distributes fresh air and warm air from a height of 18 m throughout the entire occupied area.