Hitach can give you nightmares while trying to get your product serviced. The products may be good but ofcourse they charge a premium for that.
Try reaching their customer service numbers in Ahmedabad for home appliances and your fingers will be shorter by 5 mm just redialling the keys. The numbers in Ahmedabad Head Office do not connect to anywhere. The office in Jasola, the numbers remain non-reachable and at the Hitach head-office, they say it is not their duty and the call is stone - walled at the reception.
Fortunately, if the complaint is registered(which I could do after lot of perseverance at all levels), the dealer in Gurgaon(Garhwal Aircon) closes the complaint without even visiting the premises. After again following up for a month - the answer is that we will try and attend it now otherwise you can do whatever you feel like.
My recommendation is not to buy Hitachi products - they are not cheap and service is poor.