Wow. 3-8K for a new unit is much more than i expected. Unless it includes replacing the furnace too. I just checked my paperwork, and the unit is about 14 years old, not 12. I need to replace my windows too, so unless replacement is significantly less, or repair is significantly more, I'll probably go for repair. It's a smaller local company, but i don't really know anyone i'd trust to do the work.
I guess I'll wait and see what the people i contacted have to say about it. It's really helpful to have an idea of the pricing though. Speed is going to be important, cause i have a pretty good heat tolerance, but even i don't sleep well at 85 degrees.
And on that note, time to get ready for work (where my office is frigid)