From Bar X Software:
Use this powerful but easy to use program to do an accurate energy audit of your home or business. It pinpoints many effective ways to reduce your utility bills. There are sample projects and a free 100 page book BTU Bill's Guide to Energy Conservation to help you get the most out of the analysis. The program has a weather database of 200 U.S. and 150 cities overseas. This program calculates exactly how much energy you can save on common projects like increasing roof insulation, installing new siding or double paned windows, or changing the color of the roof or outside walls. The program has been approved for energy audits of hospitals by the Texas State Energy Conservation office, the largest energy conservation organization in the world.