See how much energy and money and carbon you can save by making various design or remodeling changes to your home with this free new easy-to-use program.

You can draw in the floor plan of your own house, then click and drag your windows to their correct location. You can select from lists of typical wall and roof construction.

For advanced users there are more detailed design data input options and output display graphics.

   
"When one tugs at a single thing in nature, he finds it attached to the rest of the world." - John Muir
   

30 years in biz

   
"The U.S. represents 5% of the world's population but uses 25% of its natural resources."
   

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SunCalc shows sun movement and sunlight phases during the given day at the given location.

   
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