Heating, Ventilation, and Air Conditioning Products Design Compact Pro Air Purifier by sxdesign After systematic optimization, designers resculpted the shape of the fan runner in Compact Pro and determined that a square proportion would be better. This improves the performance by 50 percent while making better use of space and arranges the electronics more compactly. In design, the floating table-shaped interaction area with breathing light creates the visual center. The various parts are integrated by a high-order surfaces transition surrounded. The minimalist, neutral style conveys an inclusive ethos.