Product review (5 stars): Wahoo! 2 for the price of 1/2. A real savings.
Replacing the water filers regularly absolutely solves most problems of modern day regrigerators that will bake you a cake through the front door...that use only do ice and water. These cost less than 1/2 the cost at a DIY store...so 2 for $25 versus 1 for $50.  Sorta like lightbulbs and ink cartridges, the cheapest on-line option last just as long and makes me feel better actually changing them out every 6 months as prescibed versus letting them go till they are clogged.