O genral is the best ac from another but it is so costly but their service is excellent I like this ac we can on the for 1hr abd we see the room is very cold when we start the ac their has ni sound in this ac other ac like samsung, L.G, godrej, videocon, hitachi, etc.these ttpe of ac is very costly but they produce more sound and we on these types if ac for 2-3hr and we see the room is low cold I dont like these type of ac I only like o genral ac.