Germ Guardian AC4300BPTCA HEPA Filter Air Purifier; Take care of the air and pet hair inside your home with the GermGuardian AC4700DLX HEPA Filter Air Purifier. The HEPA air filter reduces up to 99.97% of dust and allergens as small as .3 microns while the pre-filter traps the larger particles like pet hair. The activated charcoal filter keeps the room smelling fresh, helping remove household odors and gasses emitted from cleaning products and other pollutants. For more odor-eliminating power, it’s treated with PetPure antimicrobial agent that inhibits the growth of mold, mildew and other odor-causing bacteria on the filter’s surface. You can also give the room a cleaning boost with the optional UV-C light technology setting that can help kill airborne germs and viruses.