Yes but... check the CO2 levels when you close the vents, and watch the water flow from your windows, and see the mold grow on the north wall.
Also, isolation keeps out the heat... Until it is inside, then it keeps it there. I agree it makes air condition more economical, but not many people have them (yet, it's booming).
Also, isolation keeps out the heat... Until it is inside, then it keeps it there. I agree it makes air condition more economical, but not many people have them (yet, it's booming).