Product review (2 stars): The replacement filter works after it is properly installed. ...
The replacement filter works after it is properly installed.  The problem during installation is that the outer O-ring tolerances are Too small and the filter drips water into the  tray below.  Quality control needs to be more consistent with the O-rings.  I used the O-ring from the old filter and it does not drip but ;you should not keep using an existing O-ring.