High-Efficiency HEPA Air Purifiers: This KOIOS AP2303 air purifiers for home large room offers powerful filtration performance covering up to 1200 square feet. With a three-stage filtration system and 360° air intake, the h13 hepa air purifier cleans airborne particles as small as 0.3 microns, such as wildfires, smoke, pet hair, dander, dust, pollen, and odors. Modern design fits spaces from small to large rooms, bedrooms, offices, dorms, basements and kitchens. 3 Fan Speeds and Silent Running: This air purifiers for home pets has 3 adjustable fan speeds.You can choose the fan speed according to the air quality.The higher the fan speed, the faster the purification speed. The air purifier operates with noise levels as low as 20dB on the lowest setting. With this quiet home pet air purifier, even light sleepers such as babies or pets can enjoy fresh and clean air the whole night. Essential Oil Diffuser and 7 Color Light: Essential oils can be added to the aroma pads on the top of th