Here are the pics of the outside unit of our mini-split. Pardon the mess, we had a very blustery rain storm in the middle of the night, and another around breakfast time so everything is dripping wet and I was not inclined to dive in there, needless to say.
What really appeals to me about this is the ability to control the temperature of one room - or your greenhouse - completely separately from the house temp and with just one small a/c and heating unit c/w a nice strong fan included.