EPC - The A to G Scale
Energy Performance Certificates use a scale of A to G. A being the most efficient home, with lower fuel bills and G being the least energy efficient with higher energy bills.
The same scale is used to define the environmental impact of carbon dioxide (CO2) emissions of a home. Most properties in Britain are band D or E.
The EPC includes recommendations which show you ways to improve your energy efficiency levels. The EU directive requires improvements that are cost-effective in reducing fuel costs and CO2 emissions.
Domestic Energy Assessors use the RdSAP program to ensure these recommendations, although general, are specific to the property in question.