I would absolutely love to simply have a system that moved air around the house. If you have a house that is 3 stories (one of them an underground basement), yo

I would absolutely love to simply have a system that moved air around the house. If you have a house that is 3 stories (one of them an underground basement), you could probably get away with a heat exchanger on the ground floor and simply running the circulation either up or down depending on the season. Yet I have never seen a system in a house that just moves air between different levels of a house.