A very creative HVAC tech may be able to use some of the heat from central
AC to preheat a tank of water. The attic seems possible, but who can tell?
Might be more trouble than it is worth.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
..


"Percival P. Cassidy" wrote in message
...
My brother-in-law and his wife are planning to retire and build a custom
home with as many energy-saving and eco-friendly features as possible.
Since they're likely to be stuck with HOA rules about exterior
appearance, solar panels on the roof are probably out, but they were
wondering about simply running water pipes through the roof space.

Does this have possibilities?

Perce