I stumbled upon a gob of (free--at least the ones I checked out) design tools (re: house building, energy efficiency, etc) last night while looking for something else.
http://www2.aud.ucla.edu/energy-design-tools/
http://www.srv.net/opt/sunchrt.html
http://www.eere.energy.gov/consumerinfo/reading_resources/v101.html
I've only downloaded a couple of them so far but I'm having way too much fun for not knowing what I'm doing!
http://www2.aud.ucla.edu/energy-design-tools/
http://www.srv.net/opt/sunchrt.html
http://www.eere.energy.gov/consumerinfo/reading_resources/v101.html
I've only downloaded a couple of them so far but I'm having way too much fun for not knowing what I'm doing!