I am planning on putting in hot tub this year and wanted to eventually hooking it into my tarm. i want to do the prelim stuff when i install the concrete pad for the hottub. How do i go from the house to the hot tub and what i would assume would be a heat exchanger at the Hot tub?? Or Heat exchanger in the house then to the hot tub?? Just looking to find out what hookups and piping i can do now when i put the pad in to make sure that i can just hook into it pretty easliy when i decide to brin the Tarm online with the hot tub. Thanks for the help as usual you guys are my saving grace