Envion FS200 Four Seasons Air Purifier, Heater, Fan & Humidifier, Black Capacity to clean medium sized rooms 3x per hour True HEPA type filter captures 99.97% of particles as small as .03 microns Low power consumption and ENERGY STAR Certified Multiple functions and settings can be used simultaneously to allow you to adjust temperature and humidity to your comfort level Silent for easy sleeping Perfect for urban living spaces with high pollution and limited space Replacement filters not included The Only Air Purifier You'll Need All Year Long: Spring When it's allergy season, you can trust the Four Season air purifier to remove common allergens, pet dander, any much more from the air in your home. Summer In warmer months, set your Four Seasons to its powerful fan mode for a cool, refreshing breeze. Fall As the season starts to turn and a chill fills the air, use the heater setting on your Four Seasons to warm your home. Winter The Four Seasons comes equipped with a heater and humidifier, so you won't feel dry even if your furnace is working overtime. The Four Seasons removes impurities like these from your home: PET DANDER: Dogs and cats bring odors and germs from outdoors into the house. They also release airborne dander, a known allergen, from their hair and skin. COMMON ALLERGENS: Hay fever caused by pollen particles in the air in spring and fall can cause irritation to the eyes and could lead to asthma or respiratory problems in susceptible adults and children. GERMS and VIRUSES: A sick person does not need to be coughing or sneezing to get you sick. Airborne flu and other viruses float throughout the air just through normal breathing. MOLD SPORES, MILDEW AND BACTERIA: All of these thrive in damp and humid areas, such as bathrooms, kitchens and laundry rooms. They can cause severe breathing difficulties if inhaled. Take a look at other Envion Air Purifiers for all your air cleaning, purifying, detoxification needs at www.envionproducts.com.