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Self-Filling Fontus Bottle Converts Air into Drinkable Water

Producing water out of thin air used to sound like magic, but thanks to modern technology, this ‘spell’ is becoming available to everyone. Fontus, a $100 solar-powered device can pull moisture from the air and condense it into potable water.

Fontus is the brainchild of Vienna-based designer Kristof Retezár. It works on the simple principle of condensation, just like the droplets of water that collect on the sides of a cold soda can when you take it out of the fridge. But the Fontus can collect a lot more water than that, because it uses thermoelectric cooling. A condensator in the device is connected to a series of hydrophobic surfaces that repel water. So when it takes in air, these surfaces get cold, leaving behind condensation.

“Because they’re hydrophobic, they immediately repel the condensed water that they created, so you get a drop flow [into the bottle],” Retezár explains.

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