Im not sure but didnt someone on this board say that the sterilization was just for the tubing and the water can be instantly sterilized by going through UV light or something like that?
DF did state to me that while the life expectancy was 2-5 years they were changing tubes out at 2 year intervals as a preventive maintenance plan. The cost of tubing is .17 per linear foot, so pretty reasonable to do so.
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