Small in size but mighty in power, this three-stage filtration air purifier combines a pre-filter, two deodorization filters, and a HEPA filter. The unit also employs a filter-change indicator, energy-saving eco mode, automatic speed control based on particles in the air, and an intuitive air quality indicator. The AP-1512HHC Beige can generate and maintain pure air in rooms up to 361 square feet, the size of a typical bedroom.