We all know hitachi is a very renowned company.thats why I took a decission to for purchased a branded ac hitachi at 3 years ago.but I am very upset about their aftersell service.that was worst as I seen before any other services.if they were not give us perfect service than why they take amc? They always takes extra charges but their service is terrible. I call their customer services again and again.but they are not available .at last when they came to service my ac they did a big mistake .thats why my ac are totally damaged.they told me itd because of extra power transmission.if I got an stabilizer then my ac will be perfect.but I dont take their advices.i again buy a ac from panasonic .it is perfect and its perfect about any stabilizer.