What is ENERGY STAR?
ENERGY STAR is a joint program of the U.S. Enviromental Protection Agency and the U.S. Department of Energy helping all of us save money and protect the enviroment through energy efficient products and practices.
In 2008 alone, Americans like you, with the help of ENERGY STAR, saved enough energy to avoid greenhouse gases emissions equivalent to those from 29-million vehicles — while saving $19-billion on utility bills.
Every ENERGY STAR qualified window is independently certified by the National Fenestration Rating Council, or NFRC, to perform at levels that meet or exceed strict energy efficiency guidelines set by the U.S. Department of Energy. Just like the EPA sticker on a new car gives you a cars fuel economy, or miles per gallon, the NFRC label will help you measure and compare the energy performance of different window brands. ENERGY STAR requirements for windows and doors vary by climate zone. For instance, a window that is energy efficient in San Diego will not be the best choice in Chicago.