Well Pat, all I can say to refute your well reasoned technical analysis is "Your explaination, while technically correct, doesn't jibe with real world experience".

Fact: With no Metlund running I need to run water from the HOT pipe down the drain for about 45-50 seconds to get warm water to wash my hands. With the system I can press the button and by the time I remember why I'm in the room I can wash with warm to hot water and none has gone down the drain! [img]/forums/images/icons/smile.gif[/img]

Now explain to Bird and Egon why if you start a journey and cover half the distance in a certain time interval, and half the distance in each of many more intervals, you never reach your destination. I think it explains why I'm often late to work. [img]/forums/images/icons/crazy.gif[/img]