FONAS 1000 is an air cleaning and disinfection device that continuously purifies indoor air using ultraviolet (UV) lamps, HEPA and activated carbon filters, and a negative ion generator. It reduces coronavirus contamination and eliminates 99 % of bacteria, spores, pollen, smoke and radioactive particles, making the environment biologically safe for constant human occupancy. The system recirculates air, neutralizes harmful particles with anions, and is suitable for hospitals and similar settings.