When we bought our home, one of the rooms had been recently added in an area that used to be an open carport.  Needless to say there was no ductwork for heat or air, leaving us to purchase a small heater and a window AC.  We found this unit, ordered it, and are extremely pleased with it!  The room is almost 300 square feet and the 6,000 btu window unit is perfect!  Keeps it cool and comfy!