In dry California, some buy units that make water from air

BENICIA » The machine Ted Bowman helped design can make water out of the air, and in parched California, some homeowners are already buying the pricey devices.

The air-to-water systems work like air conditioners by using coils to chill air, then collect water drops in a basin.

“Our motto is, water from air isn’t magic, it’s science, and that’s really what we’re doing with these machines,” said Ted Bowman, design engineer at Washington state-based Tsunami Products.

The system is one of several developed in recent years to extract water from humidity. Other inventions include mesh nets, solar panels and shipping containers that harvest the moisture from the air.

Bowman said his company’s machines — made for use at homes, offices, ranches and elsewhere — dehumidify the air and in doing so create water that’s filtered to make it drinkable.

The technology works especially well in foggy areas and depending on the size can produce between 200 and 1,900 gallons of water a day. The machines also operate efficiently in any area with high humidity, including California’s coastline, he said.

But they’re not cheap, with prices ranging from $30,000 to $200,000. Still, in California, where residents have been asked to conserve water because one of the worst droughts in recent history has depleted reservoirs, some homeowners are buying them to meet their water needs.

Besides the high price tag, the unit also requires a significant amount of energy to run. But Johnson said the solar panels on his roof produce enough power to operate the machine without additional energy costs.

Experts like University of California, Davis hydrology researcher Helen Dahlke said the technology makes sense for individual homes, especially in rural areas.