The Home Energy Saver will provide a default value for each home description question on the website.  This allows users to choose whether to answer each question and ensures that no information that would hinder a successful energy use calculation is missing.  The default values are based on U. S. DOE's Residential Energy Consumption Survey (RECS) micro data. Because the coverage of RECS changes from survey to survey data from more than one survey year are used.

The default inputs are documented in the following three sections: