[RetroTechie]

Oh come on, 'hack life' & just use bottles (or whatever containers available / practical), and open up windows. It isn't hard.

Bigger issue is time spent (daily average) on getting to a water source, and how clean/safe that water is for drinking. Boiling to kill parasites etc adds more time expense.

[Andrex]

Opening a window works for a very small livable part of the Earth. Try opening a window as Pharaoh... yeah, I'd rather have AC. And consistent heat in the winter.