The Holmes® True HEPA 360° Air Purifier features a 360-degree air intake system that efficiently captures air from all around the room to purifiy and release crisp, clean air. With 100 CADR (Clean Air Delivery Rate), this air purifier is ideal coverage for most bedrooms and other medium-sized rooms up to 155 square feet. The 3-Stage Filtration System removes up to 99.97% of airborne pollutants and allergens. The filtration begins with with a prefilter that caputures large particles such as pet hair and dust bunnies. The air then passes through the True HEPA filter, capturing particles as small as 0.3 microns to remove up to 99.97% of airborne particles. Finally, the carbon filter completely eliminates unwanted odors, from cooking smells, fumes, smoke, pets, and other unwanted household scents. The optional ionizer helps to bind smaller particles to form larger particles that are more easily captured. With great features such as 3 speed settings to customize your comfort and a filter reminder light that alerts you when it's time to change the filter, the Holmes True HEPA 360° Air Purifier is the best air purifier for your bedroom. This air purifier meets ENERGY STAR-certified guidelines to ensure energy efficiency