Hey all Over the next couple years my wife and I are planning a move to off grid. We found a 40 acre parcel and she suggested geothermal as part of the build. We heat 99% with wood and use a couple window a/c units intermittently in the summer. We have an electric furnace that we just use for circulation. As we have 2 plug-in cars, the solar required will be 20+ kw (70ish panels), propane backup generator and appliances. Primary heat will still be wood. Building permit will likely require an alternative heat source. This is where a GSHP comes in. It will likely only be used to condition air in the summer. My current home is 2,000sqft and set up for a 3T pump. Our build looks like 3000 sq ft. As the load will be primarily summer only, calcs for a 6 ton seem excessive. I am leaning toward 4 ton with possible propane backup. I am just doing a site plan now so ground loops are the initial consideration. Does 4 or 5 600 ft loops sound adequate?