@redenigma basement stays warm/stable in the winter but sits in an old creek bed. The spring near the house stays warm in the winter. I am less familiar with geothermal. Will look at the thermal maps
Solar -Property is in a 1000' wide valley running south, have to figure out if I can't do solar because of the trees near my house or if there's enough light in the fields.
Window insulation on the list too. 2-3 year proj. When I oversaw a facility solar glass co. gave a good sale pitch. Thanks