What would be more efficient cheapest to run

[nokiasixteth]

What would be use the least amount of electricity. A geothermal unit lets say for comparison a geothermal unit 2 tons. Or a mini split 2 tons also . But the mini split have a radiator on the side that the air comes in with well water flowing through at what ever gpm it needed. Im not a math tech or nothing like that on knowing how much water it would need.