Our AIR Doctor 2000 Ultra hepa replacement filter is a powerful air cleaner designed to capture ultra-fine PM 2.5 particles from the air at 0.003 microns. That is 100 times smaller than the HEPA standard and more powerful than most other premium HEPA filters! The AirDoctor professional portable air purifier provides triple protection with its UltraHEPA filter, its activated carbon filter to capture odor and VOCs, including gasses released from cooking, candles, paint, building materials, carpeting, cleaning products, hair spray, air freshener, ozone, formaldehyde and more, and its pre-filter for pet dander, animal hair, cigarette, cigar and wildfire smoke. The AirDoctor professional air purifier is almost maintenance-free! The high-quality carbon/gas trap/VOC filter lasts up to 6 months and our UltraHEPA filter lasts up to 12 months, depending on use and environment conditions. If you cook at home, AirDoctor air purifiers with washable filters are on the list of kitchen items you don't want to be without, and they go with any house decor! AirDoctors are designed to fit with any room decor or home decor. Customers who bought AirDoctor also bought: air purifiers for bedroom, air purifiers for home large room, purificador de aire para casa, air filter to match living room decor, home and kitchen, kitchen essentials, apartment essentials, hepa air purifier, air filters, apartment must-haves, air purifiers for pets and more! Ordinary air purifiers only capture some of the contaminants in the air, because they only capture particles, not the many dangerous gasses that exist in our home. With the AirDoctor we provide professional UltraHEPA filtration for home air purifiers that are superb for offices classrooms hospitals, etc. Before replacing the UltraHEPA or carbon/gas trap/VOC filter of your AirDoctor air purifier, turn off & unplug the unit from the electrical outlet and read all safety instructions and important warnings in the owner’s manual.