Product review (3 stars): It works, but your water will be ugly for a while
I use this as a replacement for my filter on my whirlpool refrigerator.  I have ordered this product twice and have encountered the same issues both time.  Installation is a breeze but both times the water coming out of the fridge is cloudy and has millions of tiny bubbles.  I follow the manufacturers directions perfectly running about 5 gallons of water through the filter before using.  I even do the 5 seconds on, 5 seconds off method for getting the first 5 gallons through.  The water remained cloudy for about a month after using.