Product review (1 stars): Previous units worked well, this one failed in 3 days.
Unit failed after 3 days, had to go to Lowes and buy a replacement.  In the past there have been no failures so this is new thing for me.  I did learn that if you take the filter out you can run the water.  So if water stops being supplied you can remove the filter and see if it starts again.  If the water does not come on then the filter is not the culprit.  If it does then the filter has failed for some reason.