Perfect for bedrooms, the Designer Series HEPA Air Purifier features UltraQuiet Technology, essential oil tray for optional aromatherapy and sleep mode to help create an optimal environment for sleep. VOC Sensor and Air Quality Indicator illuminates the floor so you can see air quality from across the room. Purifier includes three cleaning levels plus an Automatic Cleaning Mode that adjusts to the optimal cleaning level for your space. Use in medium to large rooms up to 190 square feet (4.8 air changes per hour). It captures up to 99.97 percent of microscopic airborne allergens and particles, including dust, smoke, pollen, pet dander and mold spores. Activated carbon pre-filter helps capture large airborne particles and reduces odors and VOCs. Air purifier comes with one J HEPA filter and one A pre-filter.