140 L/h High Output Water Maker

With the 12 V feed pump, the guide is a quality 3 kVA inverter or 4 kVA class generator, or larger. With the Davey feed pump, use a 5 kVA class inverter or generator, or larger; the WPC-04 enclosure supplies control power from AC. Your marine electrician should confirm starting capability, continuous output, battery capacity and other simultaneous loads.

At the nominal 140 L/h output, 1.5–2 hours produces about 200–280 litres. Match your running time to daily use and allow for changes in output with water conditions.

No. The nominal rating is for 35,000 ppm seawater at 25°C. Output changes with temperature, salinity and membrane condition. The operating limits are 160 L/h product flow and 800 psi; both apply.

The 12 V feed pump runs from the battery bank and keeps that load off the AC source. The Davey 240 V feed pump suits an installation with enough AC capacity for both pumps, and its WPC-04 enclosure supplies control power internally. The Davey option needs a larger intake. Both options are the same price.

The high-pressure pump runs on AC power, so you'll need a generator or an inverter setup to run it. Most cruising boats set up for longer trips already have this. The feed pump, which draws water in before it's pressurised, comes in either a 12V DC or 240V AC option, so it fits neatly around your existing setup. If you're not sure what you've got, that's exactly the kind of thing we'll help you work out before you buy. Just tell us about your boat and we'll confirm which setup will work properly with the power you have available.

Whether you're on a 30-foot sailboat or a 50-foot catamaran, the right size comes down to two things: how many people you're making water for, and how much run time you're happy with. As a rule of thumb, allow a minimum of around 40 litres of fresh water per person per day, and plan for more if you want the comfort of long showers and a good buffer. As a simple guide, a single-membrane watermaker suits a couple, a double-membrane system suits around four people, and a triple-membrane system suits larger crews or anyone who wants plenty of water fast.

Run time is the other half of the story. Fewer people don't always mean a smaller system. If you'd rather run your watermaker for twenty minutes than an hour, stepping up to more membranes gets your day's water made quickly and gets you back to enjoying the boat.

That's the quick version. For the proper answer tailored to your boat, crew and cruising style, use our Help Me Choose tool, which walks you through it in a couple of minutes. Or just get in touch with your boat length, crew size and typical trip length, and we'll tell you straight which marine watermaker is the right fit.

For most owners, yes, and we'd recommend it. We work with a network of experienced installers around the country who fit and service Water Makers Australia systems properly the first time. You can find one near you here. If you're mechanically confident and want to install it yourself, we do supply a full installation and operation manual and you're welcome to take that route, but for most people, having it fitted by someone who does this regularly is the smoother path. Whichever route you take, two parts of the job always go to the right hands: electrical work must be carried out by a licensed electrician, in line with applicable regulations, and hull penetrations, seacocks and below-waterline plumbing should always be completed or checked by a competent marine professional.

No. We've deliberately built our systems around industry-standard, non-proprietary components: standard 10-inch filters, DuPont FilmTec membranes, and readily available fittings, so most of what you'd need is standard, widely available gear, not a proprietary part you can only get from one supplier.

Some parts are still easiest to get directly from us, and that's fine too. We sell direct to you rather than through a dealer network, so you're talking to the people who actually build these systems, not a third party. We stock spares ourselves and can ship them out to you, including to remote areas, just get in touch and we'll sort you out.

Good engineering means thinking about what happens when something needs replacing three years and a thousand nautical miles from where you bought it.

Every system is built to order in our Sydney workshop, and we take the time to build it properly, tested and ready to go before it ships. Most systems are dispatched within a couple of weeks, with custom configurations and busy periods sometimes adding a little more, and freight depending on where you are. Get in touch and we'll confirm a timeframe for your system.

You're covered for a full three years from the date your system ships. If a component ever turns out to be defective in materials or workmanship, we'll repair it, replace it, or supply an equivalent, and our workshop labour to put it right is on us. That's the heart of it: for three years, a genuine fault on our end is our problem to solve, not yours.

As with any warranty, there are a few sensible conditions, mainly that the system's been installed and used in line with the manual, and things like freight and on-boat labour sit outside it. The full details are all laid out plainly on our Warranty page and in your manual.