Symphony "Hicool i" cooler works very well and more than my expectation. I bought it before four months for my brother and that time I hope that it works well but now I am sure that it makes his summer wonderful with its cooling. He uses it for whole night and day and that also the speed of cooling is same. It is very energy efficient with low power consumption so it not affecting his electricity bill and that proves after using this. This is the best cooler and I am very satisfied with it works. It has so many feature like new dura-pump technology, shock proof body etc. The body of the cooler is so nice that it fits in any place of the room. It is my second product which I bought from Symphony Company. This company gives only quality product and services which they give is also nice.