We are looking at finishing out a lower level area of ~ 800 sqft. It is craved up with a bedroom/closet, bath rm and the rest is open space. The temp currently stays relatively comfortable year round in the unfinished space. We were thinking of adding a MS in the open area. With out doing a handler to direct flow into the bedroom and bath room, would there be an issue with treating the area as heat/cool for appraisal purposes?