Hi,
Quote:
Originally Posted by redpoint5
I will look at my insulation next time I crawl under the house, but the pump idea sounds spendy and would waste more heat overall than just allowing the water to go tepid. I would not conserve water at the cost of having to spend more on heating.
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The water is pumped back into the hot water tank; since that is where the water is coming from. You save all the water, and you save as much of the heat as is still "contained" in the tepid water. The cost of a brass pump is the main cost; and the installation is easy, because you are using all existing pipes.
There are commercial systems like this:
(click on image for link)