i've looked into air to water machines before and one downside i've noticed is that the energy use is really really high. one device I looked at was like 1 KW

i've looked into air to water machines before and one downside i've noticed is that the energy use is really really high. one device I looked at was like 1 KW per 1.5 gallons or so! definately not something to water your lawn. At that energy usage, I'd say these are more useful for survival situations where you're only producing enough water for people to drink and survive. Other than that, I'm very excited about the propsects of air to water machines, I really really hope they become a lot more energy efficient.