Product review (5 stars): Really Works
These really do work. I go through filters about every five to six months. The signal that they need to be changed is a significantly reduced flow through the in-door water dispenser. So, the filer is actually filtering out something.  The resulting water is odor and taste free.  I think there are after market versions of this product - and in-line water filters for the incoming water line - but I'll stick with Samsung products.