Product review (4 stars): Doesn't filter the water...  but it's not supposed to.
My parents were glad to find this little bit of awesomeness,  their water quality is near perfect, so the only thing the filters were doing was slowing down the water.. But then they are of the mind that just resetting the filter light on the fridge fixes the problem.  After the second year, their water was dispensing in droplets, and Ice was a mythical legend. Who knew that the filter was completely plugged.  Add this, no more plugged filters, and the water is still fine.