I don't think so, but then I have not taken a lot of Google time on the subject either. Are you sure you can't get a wire back there? You really only need a 15A circuit. Look into pvc conduit. If you can get power back there there are a lot of units that you can install yourself. Try to stay away from cabinet units and big box store stuff. Most of it is crap. Fleck would be my first choice.