[Canabarrybarb]

I installed a Laing Instant Hot Water Recirculating Pump http://www.lainginc.com/UCT-303-B.htm in my house in NC and it worked very well. It is a $150 do-it-yourself installation without need for any more pipes since it recirculates the water back through the cold water pipe.

I've thought about installing one here in our Lantana but have hesitated because I notice that the water in the hot water line cools very rapidly once it is shut off. I expect it does this because the pipe runs through the concrete floor which draws heat out of the pipe quickly. I'm afraid that a recirculating system will end up wasting a lot of energy heating the floor.