Our Powersurvivor watermaker
is 22 years old and still works fine, on the original membrane. It has never broken down, but I have replaced the seals
twice, and it is due again. It makes about 1.5 gals. / Hr.
During 12 years of full time live aboard and/or cruising, we have had 3O gallons in tanks
and 30 more possible in jugs, if it seemed prudent.
We use about three gallons a day, by using a garden sprayer to shower
in the cockpit
, and conservation. If we catch rain, we might use 4 or 5.
Rain water, occasionally caught in the dinghy
, is kept for washing
purposes. Dive gear
uses the most.
This is perfect for a small 12V watermaker. They like regular use! We crank ours up for the first two hours each morning, and top off our tanks
with the power from our solar panels
We have spent extended time out on the reef in Belize
, and our tanks stayed full or only 3 gallons down.
With our system, even if / when the unit craps out, we have weeks of water left. (In survival mode)
The worst thing is to have huge tanks that you run low and fill with a huge watermaker. It is risky to go low on water, and watermakers last longest if they are run a little every day.
Just like on land. The best bang for your buck on energy production, watermaking, engine
size, and about everything else... is to go small and efficient. Conserved energy cost money
... like our refrigerator's vacuum panels
, but it is WAY cheaper than more production. This applies to watermakers in a big way.
At least this has been my experience.