Quote:
Originally posted by turbo6bar
I've heard active rood venting (powered fans) may use as much energy as saved. I would focus the time and bucks on blown attic insulation and additional passive ventilation. Both can be DIY jobs.
Double paned windows are a must, and if your budget allows go for the low E coatings.
Can't help you with the stucco. Hire some Mexicans. Err, maybe not. 
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i have seen self contained solar powered units. sweet!
15k is not alot of cash. good windows cost some serious dough.