Enjoy fresh, cool, filtered air inside your home with the NewAir AF-351 portable evaporative cooler. This high-efficiency air cooler covers areas up to 300 square feet and harnesses the simple, natural cooling power of evaporation. It costs significantly less to operate than traditional refrigerant-powered air conditioning systems and is better for the environment. Use it to lower temperatures in your bedroom, living room, dorm room or office and save on your next energy bill! #1 Selling Portable Evaporative CoolerThe AF-351 offers unmatched value and cooling efficiency. It's our top selling residential evaporative cooler!Covers Up to 300 Square FeetThe NewAir AF-351 evaporative cooler's powerful motor and advanced cellulose cooling pads allows it to achieve more cooling than other models in its size and price range. This unit effectively covers large living spaces up to 300 square feet.Automatic Oscillating LouversThis swamp cooler has automatic oscillating louvers that gently sweep cool air throughout your entire area for full-room coverage. Built-In Air Purification SystemThe AF-351 air cooler has a fresh air ionizer and carbon/Ti02 filters to filter and freshen your air as it cools you down. Easy to UseThe easy-to-use electronic controls with digital temperature display and full-function remote control make operation a snap. Energy-Efficient & Environmentally-FriendlySince the NewAir AF-351 portable evaporative cooler has no compressor and does not utilizes refrigerants or chemicals, it uses little electricity and is environmentally-friendly. When used in optimal environments, it can make you feel anywhere from 10 to 30 degrees cooler at just a fraction of the cost of standard air conditioning.