Residential Windows, Doors and Skylights

Save energy and money.

Replacing old windows with ENERGY STAR certified windows lowers household energy bills by an average of 12 percent nationwide. Lower energy consumption also reduces greenhouse gas emissions from power plants and homes.

Current Specification Effective Date: January 1, 2015

• The current criteria were finalized in January 2014.


• New performance levels (PDF, 238.86 KB) are effective as of January 1, 2016 for windows, doors, and skylights in all climate zones.


• Windows, doors and skylights must meet U-Factor and, where applicable, Solar Heat Gain Coefficient (SHGC) requirements based on climate zone. In addition, doors must meet U-Factor and, where applicable, SHGC requirements based on glazing level (amount of glass).


• Windows, doors and skylights originally qualified for the ENERGY STAR label in March, 1998.

What should I look for when buying windows, doors & skylights?

Every ENERGY STAR window, door and skylight is independently certified and verified to perform at levels that meet or exceed energy efficiency guidelines set by the U.S. EPA. But how do you know which windows work in your climate? The following tips will help you buy with confidence.

Purchasing Tips

Shopping for new windows, doors, and skylights can be a confusing process. ENERGY STAR makes it simple! Follow these five tips to ensure your windows, doors, and skylights deliver savings and comfort you'll enjoy.

Look for the ENERGY STAR label for your climate zone. All ENERGY STAR certified products must display the ENERGY STAR label. Check the label to make sure the product you are considering is certified to meet the criteria for your area. The ENERGY STAR label appears on the product next to the National Fenestration Rating Council (NFRC) label:

ENERGY STAR Qualified

in Highlighted Regions

ENERGY STAR Qualified

in All 50 States

Ask for ENERGY STAR when ordering. When you're ordering in a showroom, make sure to ask for a product that is certified to meet the ENERGY STAR criteria for your climate zone. You can choose ENERGY STAR certified windows in a variety of framing materials to suit your needs.

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Did you know?

ENERGY STAR certified windows, doors, and skylights can reduce your energy bills by an average of 12% nationwide, while helping protect the environment.

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