Product review (5 stars): Old water filter was very easy to remove
Shipping quick, on time.  Old water filter was very easy to remove, new easy to install, although it each took some muscle power.  Honestly, water tasted good before, and just as good after. I think the alert to replace filters is calendar based, not quantity or clarity of water.  I might replace again after more than the recommended 6 months, just to see how much a new filter is really needed.