Larger Purification Area This home air purifier can quickly purify air in a room of 2,100 Ft 5 times in an hour, effectively filtering the air of various impurities and allergens such as: smoke, pet hair, dust, pollen, dander, and removing odors. It is a good helper for home cleaning! True HEPA Air Filter The large room air purifier uses an H13 True HEPA Filter and a 3-stage filtration system to purify air. Double the amount of activated carbon particles to remove 99.9% of airborne particles (down to 0.01 micron) for cleaner air. How to Buy Filter Please search for B0CYZH8GRZ on Amazon to get the original filter Aroma Function & Sleep Mode As a home pet air purifier, the aroma function is essential. Wet the aroma pad with water before use, then drop in your favorite fragrance to help remove odors from your pet. At just 22db in sleep mode, it purifies the air almost silently.