Weatherization Assistant has a feature that allows you to calculate the Energy Index for the home. This functionality allows you to use data collected from energy bills to assess the relative energy efficiency of the structure compared to other homes. The Energy Index is a normalized measure of energy used (such as BTUs) per heating degree day per square foot.
In this lesson, you will learn how to calculate this index. Start from the Client section of the main menu, and select the Energy Index tab.