1. Working Principles: Evaporative Air Coolers replicate the cooling sensation of the breeze off the sea. In addition to cooling the air, an Evaporative Air Cooler also filters out dust and dirt particules and re-humidifies the air. Thus the environment of a room cooled by an Evaporative Air Cooler is fresher, cleaner and more comfortable. Evaporative Air Coolers work by drawing warm air though a filter pad which is saturated with water, and distributing cooled air. Fresh air is drawn in from outside and is forced through the moist filter causing water to evaporate and an exchange of latent heat energy to take place, resulting in a reduction in the temperature of the air to be discharged from the front of the cooler. 2. Advantages: 1).Powerful Cooling: With 4800 m3.hr and 1400 RPM, this powerful cooler is one of the strongest evaporative coolers on the market2).Energy-Efficient: The portable evaporative air cooler harnesses the power of evaporation in order to lower temperatures It costs only pennies a day to operate - significantly less than any air conditioner3).High-Efficiency Cooling Pads: Triple cooling pads are specially-treated and designed for high performance and maximum water absorption4).Fully Portable: Built-in casters make it easy to take the cooling right where you need it - perfect for the factories, residences, shops, hotels, restaurants, offices, supermarkets, halls, banks, hospitals, waiting rooms etc