Quote:
Originally Posted by Ormston
I'm doing something very similar, built and installed a heat recovery pipe on our shower drain to warm the cold supply to the thermostatic shower mixer valve...
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I saw a similar idea in a 1970's energy-saving book...
The guy just got a coil of soft copper tubing (it already comes coiled up), and shaped it into a flat spiral which he put on the floor of his shower. Over top of this he put a nicely crafted, flat teak-wood grate, upon which he stood.
Into one end of the spiral he plumbed a tube from the cold supply, and to the other end of the spiral tube, he plumbed a tube to the shower's cold supply side.
It all looked rather temporary, but easy to implement and efficient.
-AC