Stop moving water. Start making it.
For 5,000 years, humanity has moved to water or moved water to people: cities on riverbanks, dams, aqueducts, pipelines, desalination plants, and trucks. The WaHa Vaporator® ends that constraint. It generates pure water from the air, on site, anywhere on Earth.
The WaHa Vaporator® is an atmospheric water generator built on a sealed, closed-loop thermodynamic engine and a MOF (Metal-Organic Framework) desiccant wheel. It produces distilled-grade pure water and inexpensive dry air from one energy input, operates from −20°C to 55°C at humidity as low as 7% RH, and runs on grid power, renewables, or waste heat.
The largest freshwater reserve on Earth is the air.
Every era of civilization has been an engineering answer to the same constraint: the water is over there, and the people are over here. The atmosphere removes the constraint. It holds about 12,900 trillion liters of water vapor at any moment, and the hydrological cycle replenishes it roughly 40 times a year. If all 8.2 billion people drew 5 liters a day from the air, that would draw down about 0.0003% of standing atmospheric moisture, and the water returns to the cycle through use. Atmospheric water generation at global scale has no measurable effect on weather, humidity, or the water cycle.
The need is not abstract. WHO and UNICEF report that 2.1 billion people still lack safely managed drinking water, and the Global Commission on the Economics of Water projects that water scarcity threatens an average 8% loss of global GDP by 2050. The water is overhead; the problem has been reaching it.
Most water-from-air machines fail exactly where water is scarce.
Water stress lives in dry air. WRI Aqueduct data places 4.36 billion people, 57% of the world, under baseline water stress, concentrated in the arid regions where conventional atmospheric water generators stop working.
A water machine has to be reliable like a utility: delivering day after day, season after season. Anything less is a supplement, not a supply. The test WaHa applies, and publishes openly, is the utility standard: a location counts as viable only when a machine delivers at least 90% of its rated daily production on at least 90% of days, computed from four years of public climate data (ERA5, 2021 to 2024).
Compressor-based (mechanical vapor compression) systems, the most common AWG architecture, meet that standard on 7.0% of global land. They need warm, humid air; in dry air there is little moisture to condense, so output collapses.
The WaHa Vaporator® meets the same standard on 70.5% of global land, holding rated output down to 1 gram of water per kilogram of air (single-digit relative humidity) across its full −20°C to 55°C envelope.
Where it matters most, the gap widens. Overlaying the viability maps on WRI water-stress data: compressor-based AWG reaches 1.0% of water-stressed land and 6.4% of the water-stressed population. The WaHa Vaporator® reaches 83.4% of water-stressed land and 4.07 billion people, 93.4% of everyone living under water stress.
These maps come straight from WaHa's open analysis tool, and the architectures are compared side by side on the AWG Technology Platforms Comparison page.
We publish where the WaHa Vaporator® meets a utility-grade standard, and where it does not, using four years of global climate data.
Check your locationOne sealed loop. Two outputs.
At the center of the machine, a closed-loop heat pump drives a desiccant wheel coated with a MOF, a crystalline material whose pores capture water molecules and exclude nearly everything else, even from very dry air. The engine releases that water from the wheel, recovers the latent heat given off as the vapor condenses, and feeds it back into the next release. The heat stays in the loop and does the work again.
Because desorption and condensation happen inside a sealed chamber, the water has minimal contact with ambient air or its contaminants. The result is distilled-grade pure water: no PFAS, no microplastics, no heavy metals, no VOCs, no bacteria. WaHa water has been independently tested against US EPA, GSO 149, and UAE.S 149 drinking water standards, with NSF, UL, and CE certifications in progress. And the same engine that releases the water also dries the process air, so every WaHa Vaporator® produces inexpensive dry air as a second output.
For the full story of the engine, see The WaHa Vaporator® Engine.
The WaHa Vaporator® is the first AWG architecture with a published field record measured against its climate prediction: 17 months of continuous operation in the UAE delivering over 96% of climate-predicted output, with 99.999% measured uptime across monitored machines in the UAE and Sweden. See the record: Proven, Not Promised →
Our technology is protected in depth: explore the WaHa patent portfolio.
Built for every place the pipe doesn't reach.
Medical water at the point of care
Consistent, pure source water for home dialysis and clinical use, independent of local supply.
Premium bottled water, generated on site
The engine inside water-from-air bottling: consistent production and a pure base, in any climate.
Green hydrogen
Electrolysis-grade water on site for inland, water-isolated hydrogen projects.
Hotels and hospitality
On-site pure and designed water that replaces bottled service, and unlocks development where cities cap projects on committable water.
Real estate and development resilience
Always-pure potable water as a permanent building feature in water-stressed cities.
Data centers
Drought-proof makeup water and humidity control for water-capped sites.
Remote workforce camps
On-site potable water as a service, replacing trucked water at remote camps.
Public and outdoor hydration
Source-independent drinking water for parks, trails, and transit, anywhere on Earth.
Arid agriculture
Cooling water and humidity control for net houses and greenhouses in water-scarce regions.
From a countertop to a container.
The WaHa Vaporator® platform spans point-of-use units to industrial systems. The first available products are the Oasis-24 (24 liters/day, indoor/outdoor configurations) and the Oasis-200 (200 liters/day, configurable as a water generator or dehumidifier).
Pure water FAQ
Will atmospheric water generation deplete the atmosphere?
No. The atmosphere holds about 12,900 trillion liters of water vapor and replenishes roughly 40 times a year. Even at full global scale, AWG would draw a fraction of a thousandth of a percent of standing moisture, and the water returns to the cycle through use.
Where does the WaHa Vaporator® work?
It meets the utility standard, at least 90% of rated daily production on at least 90% of days, across 70.5% of global land and 83.4% of water-stressed land, reaching 4.07 billion of the 4.36 billion people living under water stress. It holds rated output down to 1 gram of water per kilogram of air, single-digit relative humidity, where compressor-based systems derate or fail.
How pure is the water?
Distilled-grade. Desorption and condensation happen in a sealed chamber, so the water has minimal contact with ambient air or its contaminants. Independent testing found no PFAS, no microplastics, no heavy metals, no VOCs, and no bacteria, meeting GSO 149, UAE.S 149, and US EPA drinking water standards.
What maintenance does it need?
Our systems are designed for minimal maintenance. Air filters are washable and reusable, though disposable air filters are also available. Some systems offer optional water filters and/or UV lamps as add-ons. Water mineralization is generally recommended and is available as drops, cartridges, and similar options depending on the unit. We use standard refrigeration components wherever possible, so any HVAC technician can service the unit without hyper-specialized equipment or training.
Can it run on solar or waste heat?
The engine runs on renewable or grid electricity, which makes off-grid and remote deployment practical. Some systems also allow for waste heat inputs.
Pure Water. Inexpensive Dry Air. Anywhere.
The water is already overhead. Start with one machine and a meter.
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