Basement will be approximately 1400 sq ft. It will be unfinished at first. I was hoping to have my installers stub in the heat zone near the center of the basement to provide some heat for where I plan to have a woodshop. I am not expecting to get the temperature the same as the first story but warm the area up a little. I will be insulating the exterior poured walls of the basement. When I eventually finish the basement I would like it to be able to heat a 400 sq ft rec. room.How large is the basement area to be heated? How well insulated is it?