Just in the nick of time! Automatically Preheat Water to Save Energy

Just in the nick of time!
Not only do we recycle our gray water, but now we can recycle the heat!

http://greenbuildingelements.com/2008/05/29/automatically-preheat-water-to-save-energy/

Just in time to evaluate and add to our modern prefab house kit prototype - we are pouring the foundation any day, just waiting on one thing from our systems analyst (tweaking systems that have nothing to do with the kit itself) before the pour.

Phew!