A fan (e.g. FE2owlet) in combination with the housing results in the environmentally friendly fan system ZAplus. The housing allows an optimal air supply, which was developed with CFD (modern flow simulations). The guide vane and diffuser counteract the rotating flow proportions and thus ensure a noticeable improvement in performance data and acoustics. Due to the combination with different blades and the extensive accessories, the axial fan system is suitable for different applications, e.g. stable ventilation, fruit ripening and greenhouses.