Have been learning a lot lately about Geo loops and decided to design one for my home while I had the need to destroy my yard anyways for some other projects. Ran a manual J on my home and from the best I know of it and the internals it is showing me with a heating load of 29514 and a cooling load of 20362. But am looking to expand the home and add some additional square footage as well as heat the 2 car garage partially. Which has led me to want to size this system to approx 4 tons to ensure adequate coverage for the new areas. ( I realize this basically throws the manual J out the window) but figured it would be a decent idea as to the current loads. The expansion will increase the house by a third or more depending on some design elements. Would like to use this for hot water as well so there is that to consider on top of the rest. I live in Eastern Tennessee with a semi moist clay. All the digging I have done that is the only soil type I have run across on my lot. My thought for the loop is 7 300' runs of 3/4 hpde pipe set in a trench configuration sort of. I could not find an exact configuration of what I am thinking but from all I have seen and read I think it should work. Basically would be a down and back 2 times for each loop stacked with 1' between each run. Then a second loop set on the other wall of the trench 16" apart.That would repeat twice then the last run would be the same as the first two but a loop ran in between. Making a sort of 6 pipe configuration. Deepest pipes at 8-9'. distance between trenches 2'. Could possibly go 3 I think if it will help it out. Is the loop a feasible design and layout with enough support for what I want to do? Going to put the manifold inside the house so can cut zones easily. Would also like to be able to monitor each zone just to see how it functions. Yeah I like all the detail stuff and saving data. Might help me down the road. Or someone else. What pump size would you recommend for a system with this setup? Once inside the loop will run to a 1 1/4 manifold and travel either 3' to the heat pump or 10'. Either configuration will use 6 fittings. The system will reside in the basement and will be more or less on level with the system + or - 1 ft with the loop. Debated 1 1/4" pipe but the cost difference for the efficiency seemed lacking. Not sure if it would make the pump end of things better or not. Have not really worked on that end a whole lot yet. Been a lot of learning to configure one. More than I originally anticipated for sure. Thank you for all your help in this. Interesting to learn for sure.