"The solar heaters will be on a true south facing wall. I could have gone without fans like garygarys build it solar.com build on his barn, but I wanted the fans due to the fact that I will be trying to heat a great room during the day, with the fans I will have more airflow and more heat being pushed into the room.
The fans (I hooked one up yesterday) are so quiet but push out a lot of air. I am happy with them."
Sounds good, I would like to see them, maybe another thread is in order? My log home design with a covered South front porch knocked out any passive solar...for now. I am thinking about adding a flat doormer later and making it passive solar for winter, and fitting a window for summer.