This is really so good its really good working, and voltas is one of the oldest name in airconditioner. voltas was also awarded in my home it is also good work for me no service tention no worry about this. when we compared any other producted just like Hitachi we find some different in cooling capacity and power efficiency as well. and sound is very good smooth and good work. the value of power consumption was almost oky with same rated cooling capacity and product satisfaction. voltas is excellent product totally worth.