Product review (3 stars): Needs Frequent Replacement
Clogs after just a few months. Need to replace about 3-4 times/year. Good to know it's doing its job, but the cost really starts to add up. Once clogged, the flow rate of the water is severely diminished.

Could very well be the number of people living in the household (3) and amount of sediment in our tap water before filtering (thanks, Baltimore water system).