Good day gents
We bought our house off the inlaws and he was attempting to convert their hot tub to be powered by the boiler system that runs in the house. His first system was very crude and consisted of just throwing a bunch of pipe in the tub and pulling it out once it went to temperature. The next step he moved to was a heat exchanger, but couldn't find a good way to attach the metal exchanger to the plastic pipes. He had just used a fernco coupler, which would blow apart once you turned the pump on.
Now that we own the place id like to get the tub up and running properly on the boiler system. Any input on what kind of exchanger or better way to get the tub tied into my boiler lines so we can ditch the factory heater?