So I have to wait too long for hot water. I've been looking at recirculating pumps, various brands, various methods. Read and article about gravity hot water recir. loops. I understand the theory, but am wondering if two loops can work.
You run a return hot water line from furthest fixture. You plumb it into the hot water heater's drain spigot. You remove any backflow preventer on the hot water supply side. Thermal properties of heated water take over and hot water rises out of HW heater and the cooler water in the return lines "sinks" into the bottom of your water heater. This slow circular motion keeps hot water available at furthest point. You must insulate the lines, except for last 15ft of return.
So my water lines look like the below diagram, but I would like Hot water at both ends of the line, and am wondering if two loops would work, and if so how to plumbe them correctly.