I have a OWB and am getting a hot-tub. I want to heat the hot-tub in the winter with the water from my boiler. I have viewed one persons setup like this, however they did not have an electric heater in their hot-tub, they had removed it and simply went entirely with the heat from the water-to-water exchanger. I would like to see another configuration where folks have not removed the electric heater from the hot-tub, so I can get an idea how and where penetrations were made into the lines of the hot-tub. Also, I would like to see the other components, other the the exchanger and how they have been connected. If someone out there has information on their own installation of a water-to-water exchanger and a simple yet effective way for me to do the same, I would appreciate the help. My OWF handle is gsilus, so perhaps that would be a good way to contact me at first. Also, if someone reading this is in the Minneapolis/St. Paul metro area and they have such a setup, I would like to visit and see how you connected your system up. Thx!