Product review (3 stars): I Have No Idea What It's Doing For Me
I installed it in May 2014 and within a few months the frig indicator showed that it was clogged. We use county water which I assume is fairly devoid of particulates.  I continue to use it since it filters only the water used to make ice.  I detect no abnormalities in the ice and will probably let it go another few months before replacing it.