This is my fifth time replacing this filter. The previous installations were very simple and absolutely problem-free. After this setup (just like last time) I have had a completely very low flow for 2 weeks now and the water tastes like it is not filtered at all. I don't want to use the second one I bought with this one as they are too expensive to just throw away if it's a manufacturing issue. I don't know the return policy for some used items of this type, but I hope to be able to return/exchange this item. I hate throwing money away like that. Update: Turns out it was human error. When I originally installed it, I thought I had completely screwed it up. When I wanted to change it, I wanted to make sure it was fully enabled (although I checked beforehand). Another click and whistle, that's it. The water pressure is back to normal. Rating changed to 5 because it gets the job done and easy to change. Eliminate human error as I had to put in a little extra effort to ensure it installed fully.
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