You would have to live in a 500 sq ft house to have less than 50' of
copper plumbing.

Point made though.

"daestrom" wrote in message
...
Considering 50' of 1/2" nominal piping contains less than a gallon
of water,
and US machines use many gallons, the cold, stagnant water has
little
overall affect on the filled temperature.

daestrom