Source: http://gizmodo.com/this-football-sized-device-could-replace-your-huge-wate-1517420468
That 60 gallon tank of hot water in your basement eats up a lot of energy. But tankless on-demand water heaters leave you running water down the drain while you wait for warmth. This tiny Kickstarter water heater promises to change all that, and save you money, thanks to some fascinating technology.