I bought Blue Star 1.5 Ton 5 Star Split AC 4 months ago.It has given me very unsatisfactory results.In these 4 months I have changed its gas 5 times in 5hrs use each day and for changing I have to call its staff min. 10 times to replace its gas.Cooling is low compared to my previous whirlpool ac though I had to pay more for it.The ac makes strange zrrrr sound sometimes for which I complained in the customer support and they said they will look into it but it has become a month and there is no trace from them about it.Design is good but it has failed to satisfy me.I will sell it soon and buy another one but not from bluestar.I thought bluestar was a trustworthy company but with this ac, all my trust is gone from it.Really I am very dissatisfied and I regret why I bought this one.