Asthma and Allergies The compact unit helps people with asthma and allergies by capturing airborne particles including dust, pet dander, and mold that may trigger asthma and allergies. Home Air Quality Control The AP-1512HH continually monitors and controls indoor pollution, which may be two to five times higher than outdoor levels. Pets Four-stage filtration effectively reduces the odor, pet dander and other pet-generated contaminants from indoor air. Secondhand Smoke Ideal for smokers and those who live with smokers, the AP-1512HH efficiently reduces air contaminants and odors related to second-hand smoke. Bedroom Though compact, the AP-1512HH generates enough air-purification power to reduce contaminants in rooms up to 361 square feet. Additional Uses AP-1512HH controls indoor pollution in the home, which may be two to five times higher than outdoor levels and can reduce impurities in older buildings. Small in size but mighty in power, this four-stage filtration air purifier combines a pre-filter, an odorization filter, a true HEPA filter, and a bipolar device reduce contaminants in the air. * 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-1512HH can generate and maintain pure air in rooms up to 361 square feet, the size of a typical bedroom.