On Wed, 1 Feb 2006 16:44:57 -0000, "R.P.McMurphy"
wrote:

I am turning a small box room into a wet room with a high flow shower.
However id like to keep running cost right down so am considering trying to
recover the heat in the waste water going down the plug hole to preheat the
cold water going into the thermostatic shower valve.

Compared with the cost of the water these devices use the fuel cost
is fairly low. Application of some Black Bodge Tape to the shower
head would be far more effective.

--
Peter Parry.
http://www.wpp.ltd.uk/