Hi I am hemanth , I have been using this blue star Ac for the past two years till today I didnot face any problems. The Air condition is really cool and most amazing thing in this AC is it really cools so fast and it covers almost two rooms in my home and the cons regarding this AC is there are no service centers nearby if I got any issue I should prefer the local AC mechanic and it makes sound during swinging and it consumes a little more energy which is a little bit high when compared with whirlpool AC. I suggest you can buy this AC which is efficient.