Salty ocean water makes up the vast majority of total water on the planet, while freshwater is just a fraction at 2.5%. And of that freshwater, only a small sliver is actually available for us to use, such as the water that flows through rivers.

The company says it can produce a lot more water with a product called Genny, which is aimed at replacing water coolers in homes and offices.

The resulting water is filtered once again before it’s ready to drink, while the clean air is let out into the room.

Kaploun said Watergen has devices deriving water from the air in use around the world: 10 locations around Hanoi, Vietnam use Watergen systems to provide clean drinking water for residents, Kaploun said.

Since drinking water only comprises a tiny fraction of the water we use, Rutger Hofste, an associate data analyst at nonprofit research organization World Resources Institute, said devices from companies like Watergen and Zero Mass Water could be helpful for that alone.

Despite the promise of these systems for capturing water from the air, it’s hard to imagine them replacing traditional water sources.

For one thing, they’re not yet producing anything close to the total amount of water that you likely use: If you’re in the US, that’s about 80 to 100 gallons of water per day.