Expert 50i is definitely the best pick in the market, owing to its great cooling capacity of 220 sqft. Made up of heavy galvanized steel, Auto Swing Louvers and coated with special powder paint technology, It ensures very long life. This slim metal air cooler has 3 sided honeycomb cooling pads & a heavy-duty 15" fan which ensure max cooling in a shorter span of time. With the decent water capacity, it is an ideal option for bedrooms & living rooms.