From what I can tell it removes the sediment and minerals that make our water hard. Some have filters for the chlorine also.  It would keep the shower from getting that scum build up. The wife says it will make our detergents work better, our clothes cleaner, her hair softer (due to no mineral build up), and we won't need a water filter for our drinking water anymore. However it is an investment that you don't get much back on.Â
@Zephard:
softer hair?!?! that is PRICELESS amd is invaluable! why are you being so insensitive????
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