I use this voltas air cooler . It comes with humidity control feature. It also have a voltas warranty for 1 year.It has wheels and so is portable. Use this air and make the summers as comfortable as possible. It works verysmart for that big space and also the electricity consumption is very low.The model is white in colour and made from quality plastic.The capacity of voltas P28M personal air cooler 28 litres. The cooling capacity of this cooler is decent and sound also good. It has sleek and comfort design . Service and support also good.It is value of money.