"220V AC Cooling Fan" at work (assuming no heat transfer with the outside room) not only did not reduce the indoor temperature, it will rise. Let us analyze a cause of temperature rise: When fans work, due to current through fan coil wire is resistance, it will inevitably produce an exothermic heat outward, so the temperature will rise. But why people will feel cool it? Because the body's surface have a lot of sweat, When fans work together, indoor air can flow together, so we can promote the rapid evaporation of sweat, combined with "evaporative need to absorb a lot of heat" so people will feel cool. Before using unmissable adequacy of water and ice, add water and ice time must unplug the power plug. Water tank water level to be maintained in a safe, and should be changed regularly, be sure to start using "220V AC Cooling Fan" placement level, not tilted. When to water cooling water, as far as possible the use of pure water. High purity of the ingredients purified water, less bacteria, can reduce the growth of bacteria during condensation. "220V AC Cooling Fan" in the long run, due to dust, dirt blocking, will affect the filter, air curtain air flow and cooling effect. Therefore, filter, air curtain is best cleaned once every two weeks.