Product review (5 stars): Replacement helped my lousy fridge water pressure so much!
While I had a Puresource 3 previously (installed by the owner in 2010-11, and I moved in shortly thereafter), the water dispenser would always release water out soooo slow...Since the appliance/filter was brand new when I moved in, I never bothered thinking it had to do with the filter so I never replaced it.

But for whatever reason, it made a world of difference getting a new filter.  Water pours out much much faster now.  I am very satisfied...Easy install as well...shutting off water line is not necessary, simply pop the old one out, snap the new one in, and then let the dispenser run water out for about 4 minutes (odd spurting/inconsistent water streams are normal during the first 4 minutes of pouring).