Using attic heat for the house

[TheyCallMeDave]

Originally Posted by Daox

This weekend I went to see my in-laws. I originally got the fans for this project from my father-in-law who had ripped them out of someones house (hes an electrician). I asked if he had any more of them and I got three more fans he had pulled out of places. I'm contemplating adding an additional fan or two to the setup since I think there is more heat up there to harvest.

Maybe you could stage them coming on based on attic temperature ????