The Heaven Fresh Intelligent air purifier combines seven proven air purification technologies that effectively remove virtually all types of pollutants including dust, allergens, chemicals, cigarette and cooking smoke odours and micro-organisms. Intelligent unit is equipped with advanced sensor technology to monitor air quality. The multiple air inlet design enables maximum air flow through the unit, optimizing air-cleaning efficiency. The powerful fan (106 cfm) accelerates the air through the air outlet circulating purified air and millions of air-cleaning negative ions throughout the room. The NaturoPure™ HF380 covers 60 m² (650 ft²) which makes it suitable for large living rooms, dining rooms, family rooms and office areas. Overview The washable pre filter does not require replacement, and enhances the durability and performance of the other filters. Electrostatically-charged dust collection grid effectively traps charged particles & pollutants like a magnet. Simply wipe clean when dirty. Activated carbon filter traps chemicals, gases and odors. Long-lasting, high-efficiency HEPA filter - most effective way to capture dust and allergens. Photocatalytic oxidation (TiO2) filter which effectively reduces chemicals, bacteria and odors. Germicidal UV lamp destroys micro-organisms. Air-cleaning negative ions are circulated throughout the room. Completely safe (virtually no ozone), and scientifically proven to be effective and to enhance filter efficiency. What Sensor Technology Does for You: Odor, Dust & Allergen Sensors - Know which airborne pollutants are present. Clean Air Monitor - Know just how clean or polluted the air really is. Automatic Mode - Saves you money on your electric bill by automatically adjusting settings. Filter Replace/Maintenance Indicators - Take the guesswork out of knowing when to replace filters. Ion/UV Light Indicator - Now you can know the ionizer and UV lamp are working properly.