ENERGY STAR Climate Zone Map and Qualification Criteria for Skylights (Version 5.0)

Codes, Standards & Compliance · Full text · Public-domain document

ENERGY STAR (U.S. EPA / DOE) · 2009 · 1 page (original PDF)

One-page ENERGY STAR Version 5.0 (April 2009) criteria sheet: U-factor and SHGC limits for windows, doors, and skylights in the Northern, North-Central, South-Central, and Southern climate zones, with the U.S. zone map.

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Public-domain work of the U.S. Environmental Protection Agency ENERGY STAR program, reproduced in full. Original document: ENERGY STAR Program Requirements for Residential Windows, Doors, and Skylights, Version 5.0 (April 7, 2009).

ENERGY STAR® Qualification Criteria for Residential Windows, Doors, and Skylights

This page (page 3 of ENERGY STAR Program Requirements for Residential Windows, Doors, and Skylights: Version 5.0 (April 7, 2009)) sets out the U-factor and solar heat gain coefficient (SHGC) criteria a product must meet to qualify in each of the four ENERGY STAR climate zones, and maps the zones across the United States.

ENERGY STAR Qualification Criteria for Residential Windows, Doors, and Skylights: criteria tables for windows, doors, and skylights and a map of the United States, including Alaska and Hawaii, colored by the four ENERGY STAR climate zones: Northern (blue), North-Central (yellow), South-Central (orange), and Southern (red)
ENERGY STAR Qualification Criteria for Residential Windows, Doors, and Skylights, with the ENERGY STAR climate zone map (Version 5.0, April 7, 2009)

Windows

Windows: qualification criteria by climate zone
Climate ZoneU-Factor1SHGC2Compliance path
Northern≤ 0.30AnyPrescriptive
Northern= 0.31≥ 0.35Equivalent Energy Performance
Northern= 0.32≥ 0.40Equivalent Energy Performance
North-Central≤ 0.32≤ 0.40
South-Central≤ 0.35≤ 0.30
Southern≤ 0.60≤ 0.27

Doors

Doors: qualification criteria by glazing level
Glazing LevelU-Factor1SHGC2
Opaque≤ 0.21No Rating
≤ ½-Lite≤ 0.27≤ 0.30
> ½-Lite≤ 0.32≤ 0.30

Skylights

Skylights: qualification criteria by climate zone
Climate ZoneU-Factor1SHGC2
Northern≤ 0.55Any
North-Central≤ 0.55≤ 0.40
South-Central≤ 0.57≤ 0.30
Southern≤ 0.70≤ 0.30

Map legend

  • Northern (blue): the northern tier of the contiguous United States, including New England, the upper Midwest, the northern Plains, the Mountain West, the Pacific Northwest, and Alaska.
  • North-Central (yellow): a band across the central United States from the mid-Atlantic through the Ohio Valley, central Plains, and parts of the interior West and coastal California.
  • South-Central (orange): the southern Plains, the interior Southeast, and parts of the Southwest and central California.
  • Southern (red): the Gulf Coast, Florida, southern Texas, the low deserts of Arizona and southern California, and Hawaii.

Footnotes

  1. Btu/h·ft2·°F
  2. Fraction of incident solar radiation

Source line printed on the page: ENERGY STAR Program Requirements for Residential Windows, Doors, and Skylights: Version 5.0 (April 7, 2009), page 3.

This document is a work of the U.S. government or a government-funded laboratory and is reproduced in full for research and educational purposes. Logistics Lighting has re-formatted it for readability; the wording is the original author's. Report an error at info@logisticslighting.com.

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