Greenville SC New system quote and maybe DIY system instead The Geothermal quote was today. The said we would need 3.62 ton and we should get a 4 ton system our house is 2100 sqft We live outside Greenville SC. Our soil is red clay. They don’t use slinky loops they dig down 6’ put pipe in the add 2’ dirt put the return in trench. $37,095 for a series 7 water furnace $32,324 for a series 5 water furnace Add $2,500 for hot water heating The load calc came to 3.62 ton they said they would install a 4 ton unit with no backup heat strips. (I have 3.75 ton mini splits now) There is no way I will have it installed at this cost. It is like they calc the tax savings and add that much to the estimate. I recently bought a tractor with a backhoe and a front-end loader. I have done a DIY 12.5 kw solar install about 5 years ago. I installed 4 mini splits systems. I can take on big projects and I thinking about DIY project. I called Ingrams water & air I was looking at Climate master Tranquility 30 and the Tranquility 22 the 30 is $1,899.39 more money. I am thinking about a non-pressurized system my system is in the crawl space and I don’t want to make a purge cart. I am thinking about getting a Desuperheater and disable it at first the later getting a holding tank that will feed my tank-less hot water heater. It will be about 50’ away from the unit hopefully that is not too far. Still need to decide to do Slinky and just using my 10” back hoe and doing long runs. The Tranquility 22 with everything to do the install is $8,982 The Tranquility 30 with everything to do the install is $11,696.08 The Tranquility 22 is more the price I would like to be but I want a good performing dependable system. Any advice is welcome.