If you can honestly earn income from the house as a rental (taking into consideration all of econprof’s very valid points), and IF you think there’s a possibility that you will be moving back down here in the future, then it might be a good idea to rent it out.
OTOH, if you’d barely be breaking even, or if you’d be losing money, then it might be better to sell. Also, of you don’t think you’ll be living here again, it might be a good idea to sell, as well…a bird in hand and all.
Best of luck with your decision, and with your move up north!