Hi we recently got a estimate on a new furnace and A/C replacement and the contractor did a load calculation on our two story house with a finished basement. The contractor did load calculation for the main level and upper level but did not do one for the finish basement. Does the finish basement need a load calculation done? It is insulated and dry walled except for the room that the furnace is in. We had a couple of qoutes already and both did load calculation but neither did basement which I said is finished. Thanks for any response and opinions. We live around the twin cities in Minnesota if that makes a difference.