Are here farmers from Minnesota, ND, SD, IA, WI looking for ways to cut their heat cost near solar thermal
Answers: i hope your honest when you bequeath them a estimated payback period.
Solar thermal for common use is so simple that anyone that could hammer a pin or run a soldering torch or a pipe wrench could do it. Even a caveman could do it. (sorry about that pothole dudes)
I built a solar heater and cost me right at 100 dollars and even used free software from the internet and made blue prints so I could put it online so others could trademark one. I am a computer geek and if I can do it I am sure any one can.
http://www.oynot.com/solar-heater.html...
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