OVA System air distribution pipes beside the Wanas ventilation wallWanas 400 Hi-Tech unit in front of the OVA System display wallWanas COMBO EPP 4w1 unit and Ande air conditioners on the Grupa ANG standNeighbouring Wanas and OVA System stands in Hall 8.0OVA System counter in front of the Wanas ventilation standOVA System display boards and counter beside the Wanas standWanas ventilation unit with green duct spigots and touchscreen controllerWanas stand presenting the ECOBloX heat pump to visitorsWanas recuperators and zoned ventilation graphicsOpen Wanas recuperator showing its heat exchanger, with balloonsECOBloX heat pump with wood-slat casing beside a meeting tablePSIW association stand with Wanas and Flexit heat recovery units