Water & AC for Anyone Anywhere
We make the most scalable and affordable atmospheric water harvesting and air conditioning devices. WattAir’s proprietary heat exchanger systems are designed to absorb moisture from the air across the largest humidity range, at the lowest cost, and at the lowest energy expense
Featured Products
ReGen (Summer 2026)
Decentralized water for Agriculture
Contact sales for product enquiries
Airdra (Summer 2026)
Water, cooling and HVAC for data centers and residential
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About
WattAir
WattAir is a climate tech company pioneering next-generation water and air solutions by transforming ambient moisture into a sustainable resource. Our patented technology combines high-efficiency coated heat exchangers with low-grade thermal energy—such as solar heat or HVAC waste heat—to produce clean water and improve cooling performance in even the driest environments.
Designed for modular deployment, WattAir systems provide decentralized water access and energy savings across agriculture, HVAC, data centers, and off-grid applications. With record-breaking water productivity and cost-efficiency, WattAir is enabling scalable, affordable water security and sustainable thermal management—anywhere, anytime.
Why Choose WattAir
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Reliable Water off Grid & Operational Down to 15% RH
We utilize a material’s affinity to water to draw in moisture at humidities as low as 15%. We can use low-grade heat down to 45°C, which can be sourced from natural sunlight or waste heat, to generate captured vapor as potable water.
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Fastest Moisture Uptake Rate
Through innovative component design, we can achieve moisture capture and removal at a rate that is 10 times superior to our competitors.
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Lowest Energy & Financial Cost
We pride ourselves in our systems engineering and use of abundant materials to deliver the lowest CAPEX and OPEX solutions.
Featured Publications by Founders
Recent News Articles
Atacama sunshine helps to pull water from thin air
-nature highlights
Atmospheric water harvesting: Optimization of a hygroscopic hydrogel device improves efficiency
-Tech Xplore
Harvesting Drinking Water From Air With Innovative Absorbent Fins
-Sci Tech Daily
Star Wars-style ‘Vaporator’ could address water scarcity in the driest parts of the world
-C&EN
This material makes drinking water in the desert - here's how
-World Economic Forum
MIT researchers develop high-performance water harvester for desert environments
-R&D World
Breakthrough as Irish-led study at MIT sheds light on long-standing materials and environmental science mystery
-Engineers Ireland
In Situ X-ray Microscopy Unraveling the Onset of Salt Creeping at a Single-Crystal Level
-MIT.nano
Contact Us
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