The Energy Star Program

Learn How To Identify ENERGY STAR Compliant Windows & Doors for Your Project

Energy Star Program LogoChoosing windows and doors that provide the greatest energy efficiency and therefore the greatest savings on energy bills is easy; the Department of Energy sets the rigorous standards and Atrium manufactures the right products to meet or exceed those standards. We’ve done the work for you.

But there are a couple of things to keep in mind. A window or door that meets the Department of Energy’s requirements will carry the ENERGY STAR logo giving you peace-of-mind that you are purchasing a product with enhanced energy efficient properties.

Secondly, with different climate zones throughout the United States there is no “one-size fits all” ENERGY STAR requirement. Different regions require different standards of energy efficiency. In other words, what is needed in the south is different from what is needed in the northeast. No worries. Atrium has the products to meet or exceed your energy needs no matter where you live.

The Energy Star Website
The Home Page for the ENERGY STAR Program Website

Visit the Department of Energy’s website for additional information on ENERGY STAR and energy savings. Located at:

2023 Energy Tax Credit

Learn more about the 2023 Energy Tax Credit extension and download the Atrium Manufacturer’s Certification Statement.

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Awarded the ENERGY STAR Most Efficient Recognition in 2023

The ENERGY STAR Most Efficient 2023 designation recognizes the most efficient products among those that qualify for the ENERGY STAR program. Atrium Series 8900 double hung, horizontal slider and picture windows represent the leading edge in energy efficient products this year.

Energy Star Region Map and Performance Criteria

A Map Showing The Various Energy Star Climate Zone for the Entire United States

ENERGY STAR Program climate zone map for the United States.

Window and Door Criteria Maps for the Energy Star Program

ENERGY STAR Program performance criteria for compliance in each climate zone for windows and doors.

ENERGY STAR Related Resources

NFRC Label Overview Sheet

( pdf | 287.06 KB )


Climate Zones by County

( pdf | 211.46 KB )


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