These filters last 2 to 3 months. I wish I had never bought this system. The yellow filter starts to clog after about two months and then affects the ice machine because the pressure is too low. The old Watts system was much better. I think they design filters that close faster so you don't have to buy them. Too bad they don't last nearly as long as they say. Oh, and on top of that, it's hard to know which one is connected, so you end up replacing the ones that probably didn't need replacing. More $ down the drain.
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