When you start the shower, how long does it take to heat up the water? More specifically: how much water is being wasted?
Some people in North Central Florida say they have a device that can heat things up in a hurry--and much more efficiently than a conventional hot water heater on its own.
In the Technology Spotlight, Glenn and Mara Blumberg of Green Lantern LLC explain to TV20's David Snyder how the "Eco-Aqua" system works.

Link: http://www.greenlanternllc.com/