The Venta Kuuboid XL Max Air Purifier with twin VENTAcel Nelior filters (Beyond HEPA) will purify the air in a space up to 810 square feet with 99.95% filtration efficiency. The dual-filter technology used in the Venta Kuuboid helps to reduce indoor air pollutants such as pollen, mold spores, pet dander, dust mites, cigarette smoke, bacteria, viruses, and other volatile organic compounds (VOCs) down to .07 microns. The quietest and most powerful air purifier on the market, the Venta Kuuboid emits no ozone or ions, unlike many other air purifiers available. The Kuuboid XL Max features three ways to operate your unit: the digital touchscreen display, infrared remote or through the Venta app when WiFi is enabled. Even with the Turbo Boost function, the Kuuboid requires low energy consumption. Improve your indoor air quality from anywhere with the WiFi-enabled capabilities by downloading the Venta App (available on iTunes and Google Play). Once connected, you are able to monitor your indoor air quality, change fan speed, set the programmable timer, and more.