Head to head · updated 5 September 2026

Rainman Frame AC 100L, auto vs Schenker Zen 100

Zen 100 costs 3.5× less energy per litre (4.0 against 13.9 Wh/L). Zen 100 is about $2,531 cheaper on indicative pricing.

SpecFrame AC 100L, autoZen 100
BrandRainmanSchenker
Output70–110 L/hr100 L/hr
Power draw1,250 W400 W
Energy per litre13.9 Wh/L4.0 Wh/L
Run time for 100 L1.1 h1.0 h
Energy for 100 L1,389 Wh400 Wh
Power sourceAC 240V12/24/48V DC or AC
ConfigurationFramedModular
Membranes3 × 21in2 × 4×21in
Indicative price$12,131$9,600
Efficiency rank25 of 302 of 30

Highlighted cells mark the better figure on that row alone. Lower is better for energy, run time and price; higher is better for output.

Buy the Frame AC 100L, auto if…

Your priorities are output, price and installation rather than energy per litre; on the numbers these two are closely matched.

Get a quote on the Frame AC 100L, auto

Buy the Zen 100 if…

Your boat runs on solar and every watt-hour is spoken for, because this is the cheaper litre to make; you want tanks full in the shortest possible run, or you have a genset that is going to run anyway; the purchase price matters more to you than the running cost.

Get a quote on the Zen 100

Common questions

Which is more efficient, the Frame AC 100L, auto or the Zen 100?
The Zen 100, at 4.0 watt-hours per litre against 13.9. Over 100 litres a day that is a difference of about 989 Wh.
Which makes more water, the Frame AC 100L, auto or the Zen 100?
The Zen 100, at 100 L/hr against 90. That is 1.1 times the output per hour running.
Which is cheaper?
On indicative pricing the Zen 100 at $9,600, about $2,531 less than the other. Both figures exclude freight, duty and installation, and Australian dealer pricing normally reads higher.
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