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 evaporative air cooler has 3 sided honeycomb cooling pads & heavy duty exhaust fan which ensure max cooling in a shorter span of time. With a decent water capacity, it is an ideal option for bedrooms. living rooms cooler.