No problem. My point was that they don't hoard MUCH water; the small amount they do hoard saves water over continuous flow. And also that using already-hot wat

No problem. My point was that they don't hoard MUCH water; the small amount they do hoard saves water over continuous flow. And also that using already-hot water gets it closer to the desired temperature at least, meaning less work for the heating element. If you're using a conventional water heater that's just pointlessly keeping your water hot all day, I figure you might as well use it. But of course, there's still a net loss of hot water that must be replaced using energy, so at best.... (you know what's coming)... It's a wash.