Any suggestions for a source and size for ducted fans?


Well, there's this place:
http://www.espenergy.com/in_line_duct_fan.htm

I know nothing about the company at all, but just did a quick search
for "in-line duct booster" and they showed up. Looks like they also
sell thermostats and dampers too. A six inch duct booster is ~$27. I
don't know much about ducted fans, but I think they don't like back
pressure, therefore short straight runs with few restrictions may be
best. AFA size 6" or 8" I'd guess.

My local Menards (midwest version of HD) has booster fans too. You
may want to check around.