Energy Star is a government program created to help Americans save money while benefiting the environment at the same time. The energy star label helps consumers to recognize those products and practices that minimize greenhouse gas emissions and other harmful pollutants that are caused by using energy inefficiently.
The EPA (Environmental Protection Agency) established certain guidelines that products had to meet in order to receive the Energy Star seal. One of the key specifications outlined by the EPA is that the products that receive the Energy Star seal must be proven to save energy through measurable and verifiable energy consumption. Here are some other criteria that need to be met in order to earn the Energy Star seal:
- Products must help to save energy nationally.
- Specified products must offer the function and durability that customers want, coupled with energy efficiency.
- Customers must be able to recoup increased cost of energy efficient products through savings on utility bills within a reasonable period of time.
- The energy efficiency Energy efficiency can be achieved through broadly available, non-proprietary technologies offered by more than one manufacturer.
- Labeling must effectively differentiate products and be visible for purchasers.
Energy Star Ratings
Energy Star ratings for windows vary from climate zone to climate zone. There are four different climate zones that determine the measurements for being considered an Energy Star window. Here are the climate zones along with the ratings for certification.
Window performance criteria
|= .31||≥ .35|
|= .32||≥ .40|
|North Central||≤ .32||≤ .40|
|South Central||≤ .35||≤ .30|
|Southern||≤ .60||≤ .27|
For more information on Energy Star performance criteria go to http://www.energystar.gov/index.cfm?c=windows_doors.pr_anat_window
For general Energy Star information go to http://www.energystar.gov/index.cfm?c=home.index