A mechanical space conditioning device comprising an enclosure, a fan to move air, and a finned extended surface heat exchanger (a “coil”). The coil transfers heat from refrigerant (“DX” or “direct expansion”), water or fluid to the air stream to heat or cool the air passing through. In many cases, a fancoil might also contain a filter and duct connection flanges. Can be installed as an exposed device or hidden in floors or ceilings.