I control the heat well in my home with 1 large window unit for the main portion of my home with the help of a ceiling fan and a small unit for the bedroom. Since there is no duct work would there be any advantage to using ridge vents and/or improved insulation?
either one would help reduce heat in the attic.
there are a lot of factors involved in this it is called the envelope the infiltration of outside air vs inside air pressure in a nut shell the answer is it not practical to spend that amount for ridge vents or power ehauster