I have been using kenstar water cooler since 3 yrs and found some problems in it here are they.
It has small capacity tank as if u full it then it gets empty over night and alarm starts beeping which is very disturbing.
Another problem is that its fan power is low u only feel fan air only if u are very close to it.
It is very small that is good but consume too much electricity no power efficiency.
Its switch on switch off button are not too good they get loose very ofter and not work nicely after once they distroy.