It is a great water purifier. I am using this for a long time since 2011 and never have any complain yet. Once the germ killer battery depleted you can replace it with a new set which only cost around 500 bucks. The cleaning and fitting is very easy and is very user friendly design.
You dont have any maintanence cost like other purifiers which are much costly and needed maintenance in regular interval of time. One new kit set last me for around two years. Though it depends how much you use it. So dont be confused just go for this one and only Pureit.