Green Your Home - The Envelope
Up to one third of the heat generated in a house is lost through the roof, walls and ceiling. Add insulation to R-values of 32 or more. Ceiling fans, up in the summer. down in the winter. New windows and doors can be expensive; as an alternative caulk and weatherstrip leaky windows and doors. On the sunny side of the house, open the window coverings in winter and close them in summer. You'll be amazed how much the sun affects indoor temperatures.
Have a great weekend!