Since electric usage in the winter is significant, I decided to look at other ways to heat during the winter.
I decided to move forward with an active Solar Thermal system to augment heating during the winter. (Not replace, augment.)
After looking at pricing for these systems, I could not justify the expense as it related to a lengthy ROI (15 years or more) associated with them.
Thus, I decided to build one myself. Many components are in place and the system is 95% complete,
I plan to post pictures and some telemetry during the May 2017 time frame.