Havells RO purifiers mandatorily need filters to be replaced every 6 months, else the purifier will stop working. even though if you get servicing done every month but still by end of 6 months filters need to be replaced on extra charge to customer. IT DOESN’T EVEN COMES UNDER WARRANTY of product even within a month of purchase.
That means there is an expense of 6k every year on this purifier as part of maintenance which is almost equivalent to the water cans getting delivered to your doorstep.