| Well, that is very sophisticated. You cannot argue with not having to change the carbon for sixteen years.
In the old days, two activated carbon canisters were used, but they were run in series (water going from one to the other). The first canister had the older batch of carbon followed by a batch of newer material in the second canister. This way, the old stuff would get completely used up and the new stuff in the second canister would catch any chlorine or other pollutant that leaked through. When the old batch of carbon was replaced, the flow was reversed.
-s t |