Complete development of an innovative air purifier. A functional sample was used to dimension the device and test its performance. The concept was then integrated into a simple design by Lorenzo Scazziga. The filter change is very simple and yet invisibly integrated from the outside. A hidden handle on the bottom edge raises the entire unit by gas struts. The upper filter can be reached by opening the outlet. In addition, the design has been optimized for simplicity to the extent that all parts can be assembled and also disassembled like Lego. The approximately 120 components are held together by just 12 screws. None of them are visible from the outside, but they are still easily accessible.