To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
Avoid Hitachi.. crap product. Hitachi is making people fool in indian market. Their mass production is below standard and less then average quality. I have 2 A.Cs one fro Panasonic and other Hitachi. I am regretting the day I picked up Hitachi though I am happy with Panasonic, I just though Hitachi would be better AC as reputation, but it's crap.
Don't even think of buying any HITACHI ACS. I bought rsd318eaea model a month ago, it is not turning on since yesterday morning. If anybody want to save money don't buy Hitachi ac. If a product fails to work with in a month of buying it , you can clearly see the quality of the product.
I don't know about other ACS but Hitachi ACS are definitely not good.