I just became aware of a system that is being used in Oregon to rate how energy efficient a house is.
The system is called EPS (Energy Performance Score). Apparently it is easily and economically conducted, and accurately predicts the amount of energy that will be used in operating a building.
Here is a brief video:
Energy Trust of Oregon
And here is a document that provides a bit more information:
http://www.imt.org/files/FileUpload/...IMT-Oregon.pdf
Do other states (or countries) have similar rating systems in place for rating a house's energy efficiency?
-AC