Product review (4 stars): Prime filter to get rid of cloudiness, then filter works perfectly
This filter must be "primed" when first installed. You must run the water to dispense at least a couple galloons to get rid of the cloudiness that some many reviewers are referring to. Once he cloudiness is gone, the filter is ready to go.

I did notice better drinking water quality. Depending on how much water is dispensed, this filter should last up to 6 months. It is easy to install but the price is steep. There is no choise and what other filters are available on the market, the price on amazon isn't that bad.