> If I had this set up in my house, I would be inclined to press the
> button before I needed the hot water, such as when I was getting ready
> to cook dinner, then a few minutes later when I needed the hot water,
> it would be there.
Exactly what I was thinking about my shower. Generally I turn the shower on
first, then brush my teeth while the hot water comes from the other end of the
house. That only wastes a little hot water. But sometimes I get distracted,
and waste a whole bunch of hot water ...