This is one kind of a AC which needs only 20-25 volts of electricity for whole day usage and there is no damages and if there is also o need to worry at all u just have call customer care and call them register ur id and u will get a service within 48 hrs and the cooling of any size room gets cool within 10 min required to make room cool and till now the the user have said that no matters how the service is it has satisfies them and it is the no 1 cooler company in india and I guess the amount we spent on the AC cooler is more satisfying than other brands I just all people who want AC in less price with more features so people I would conclude by saying blue star is the best AC even seen