That might work. We have a large west facing window where it would fit. During summer they can go out on the deck. I like the little oranges, mandarins I think.
So far I haven’t seen any dwarf mandarins, but that doesn’t mean there aren’t any. And now that you say that, those are my favorite type of orange! The west window would be great. My daughter has hers in a wide west facing window and she has had zero problems.