I have been using this air conditioner for 3 months, and highly impressed with its cooling and working.it cools a medium size room very efficiently and in it the coling is achieved through refrigral cycle .it has swings which spread cool air all around the room and makes you feel chilled in high temp summer.i will suggest definitely go for it.it has capacity of 1 ton.
And it is highly electricity efficient.and at last when it comes to blue star its not needed to describe.