I am using this AC since 8 months. Performance is good. First service was free. The same AC woth copper condenser is available at cheaper price. Remote quality is bit poor. This is aluminum AC. It takes some time to cool the room as it is not copper. It never makes any noise as I checked few other brands in the same range and they were making a lot of noise. If we talk about electricity consumption then this is definitely must buy. As it is 5 star the electricity bill is minimum. You will save 1000 per month at least if compared with 3 star. Best AC from Voltas. I will recommend this. A must buy cooling agent for your home.