I am from west bengal and here summer prevails for long time. I am using Hitachi RAU517ISD split air conditioner fro 1.5 year. This AC works very well. This is a good product form Hitachi. Though it is bit costly in comparison to similar product from other brands but the performance and cooling makes it worthy. I suggest buyer to buy 5 star rated electronic products. The cooling capacity is good. The design and looks of this AC is also good. This AC works without making much noise which is also a good thing. This is a value for money product. Hitachi product service is also good.