Breakthrough core technology.
We can’t show you what’s inside the box yet. What we can say is this: Rainbox is built around a compact, arrayable thermal core designed to unlock water access and reuse that simply hasn’t previously been practical — radically simplifying treatment, recycling heat, and cutting out the long chain of pretreatment, chemicals, filters, membranes, and replacements conventional systems depend on.
Nature’s separation, re-engineered.
Sunlight evaporates water. Contaminants stay behind. Clouds condense. Clean water returns. Distillation is nature’s incredibly effective separation method. The problem has always been energy, size, and practicality. Rainbox is changing that.
Not a just better filter. The only option where others fail.
Works where membranes don’t
Minimal waste. Tiny landfill.
Works where membranes don’t
Built for the water other systems struggle with — variable, mineral-heavy, hard-to-treat, high chemical loads.
Lower lifetime cost
Minimal waste. Tiny landfill.
Works where membranes don’t
Comparable upfront costs. Less replacements. More stable performance. Lower cost over time.
Minimal waste. Tiny landfill.
Minimal waste. Tiny landfill.
Minimal waste. Tiny landfill.
No disposable filters. Long-life components. Designed to minimise landfill.
Exceptional purification
Minimal waste. Tiny landfill.
Minimal waste. Tiny landfill.
A direct, universal route to cleaner water, engineered to deliver distillate-grade water.
Radically simplified treatment
Radically simplified treatment
Radically simplified treatment
One compact thermal core, designed to replace long, complex treatment chains.
Infinitely modular
Radically simplified treatment
Radically simplified treatment
From single homes to industrial installations — one repeatable core.
Energy-flexible
Radically simplified treatment
Energy-flexible
Designed for mains power, waste-heat integration, and solar-ready deployment.
Tiny footprint
Radically simplified treatment
Energy-flexible
1,000 litres a day from a core module of just 0.4m³ — for where space matters.