For a small area like that I suggest a small wall or floor mount toe kick heater. I had one in my living room that I hooked up to a solar system. It put out decent heat for it's size. I did a lot of research before deciding on this unit. I had the type FS-A. You need a 110 volt power source available for the small fan and you can run 1/2 inch copper or pex rated for heating. The coil unit mounts to the wall with two screws and the cabinet sits over it and secures to the coil unit with two screws on the sides. Neat little units. This spring one of my projects is to put one in two of the upstairs bedrooms. I'm remodeling the upstairs and before I replace the floors I'll run more electrical and pipe the hot water to these guys. The one I had was about 4 inches deep and 24 inches long by if I remember right 24 inches high.
I am not affiliated with or in any way associated with the manufacturer or any dealer or distributor. Just a satisfied user passing on info. :
Try this link for photo's and all the manuals provided for free downloads. http://beacon-morris.com/html/steam_hot ... c_heat.asp
New Beginning Church