Silver nanoparticles in the EcoSilver pre-filter prevent the growth of microorganisms on the filter, including bacteria and viruses, and removes harmful VOCs (volatile organic compounds). The True HEPA filter removes up to 99.97% of airborne particles as small as 0.3 microns in size including smoke, dust, pollen, pet hair and dander, mold spores, and dust mites. Granular Coconut Carbon exclusive to the HP125 HEPA filter helps reduce household odors from cooking, cleaning, smoking, and pets. Soft-touch digital control panel, 360-degree air intake, and optional LED accent light for ambiance or nightlight. 4 fan speeds, sleep mode with whisper-quiet operation, and timer with 2, 4, and 8 hour run times.