Watermakers from $6,000 to $10,000.
Where the two pump technologies meet. Energy recovery becomes available here, and so do the higher-output conventional units — the same money buys either.
What this budget really buys. This is the band where the decision is real. For roughly the same outlay you can have many litres per hour at conventional efficiency, or far fewer litres at a quarter of the energy. Which is right depends entirely on whether your power comes from an engine or a panel.
Every system $6,000 – $10,000
Ordered by watt-hours per litre, not by price — the cheapest row is rarely the top one.
| System | Power | Output L/hr | Draw W | Wh per litre | Price |
|---|---|---|---|---|---|
| Zen 30 Schenker | 12/24V DC | 30 | 110 | 3.7 | $6,300 |
| Zen 100 Schenker | 12/24/48V DC or AC | 100 | 400 | 4.0 | $9,600 |
| Ventura 150 Deluxe Spectra | 12/24V DC | 24 | 108 | 4.5 | $6,000 |
| Ventura 150 Connect Spectra | 12/24V DC | 24 | 108 | 4.5 | $7,400 |
| Zen 50 Schenker | 12/24V DC | 50 | 240 | 4.8 | $7,800 |
| Portable 48VDC 140L Rainman | 48V DC | 100–154 | 1,250 | 9.8 | $6,240 |
| Frame AC 140L, manual Rainman | AC 240V | 100–154 | 1,250 | 9.8 | $7,685 |
| Frame 48VDC 140L, manual Rainman | 48V DC | 100–154 | 1,250 | 9.8 | $8,666 |
| Modular 48VDC 140L Rainman | 48V DC | 100–140 | 1,250 | 10.4 | $6,421 |
| Frame AC 100L, manual Rainman | AC 240V | 70–110 | 1,250 | 13.9 | $8,642 |
| Portable Petrol 140L Rainman | Petrol | 100–154 | — | petrol | $6,731 |
| Portable Petrol 70L Rainman | Petrol | 50–77 | — | petrol | $6,699 |
| Ventura 200 Tropical Spectra · spec unconfirmed | 12/24V DC | 31 | — | not published | $8,200 |
Common questions
- What is the cheapest watermaker $6,000 – $10,000?
- Spectra Ventura 150 Deluxe at $6,000 indicative, making 24 litres an hour at 4.5 Wh per litre. Cheapest to buy and cheapest to own are different questions — the Schenker Zen 30 in this same band runs at 3.7 Wh/L.
- Is a more expensive watermaker cheaper to run?
- Not reliably, and that is the point of ranking by energy. Within this band the spread is 3.7 to 13.9 Wh per litre, and it tracks pump technology rather than price: energy recovery reuses the pressure in the brine, conventional pumps throw it overboard. Compare the Wh/L column, not the invoice.
- What is not included in these prices?
- Freight, installation, and any dealer margin or currency movement since the dataset was checked on 5 September 2026. Installation in particular can be a substantial fraction of the unit price and depends entirely on the boat, so we do not publish a figure for it — ask for the unit and the install quoted separately.
Spend more, or less
Indicative, not quoted. Prices are manufacturer list or dealer figures recorded at the last dataset check (5 September 2026) and converted to Australian dollars where published elsewhere. They exclude freight and installation and they move. Watt-hours per litre is the rated draw divided by the rated output and does not move — which is why the ordering on this page is by energy rather than by price. Methodology.