Originally Posted by Speedbump
The more TDS your water has, the quicker the cylinder will get scuffed up.
If city water, you have chlorine. Chlorine degrades the mineral in the unit shortening it's life and cuts down on it's efficiency.
Do some softeners resist these insults better than others?
Is there something the OP can put upstream so that both the softener and the gadget, working together, provide a very long life for the money paid?
". . .the interaction of multiple elements in a system to produce an effect different from or greater than the sum of their individual effects."
I guess I'm assuming the gadget's initial cost + maintenance cost is less than the softener's initial cost + maintenance cost.
Seems like investing in a water test may be worthwhile to figure out the root cause of failure since a few hundred are riding on this.
If the water test results are considered "perfect information" then thishttp://en.wikipedia.org/wiki/Expected_value_of_perfect_information