---
title: "What Is ENERGY STAR climate zone? Window and Door Glossary"
description: "An ENERGY STAR climate zone is a region of the country with its own limits for the U-factor and SHGC a window must meet to qualify."
url: https://honeyrock.multisites.ai/glossary/energy-star-climate-zone
publisher: Honey Rock Window and Door
phone: +1-214-484-9982
quote: https://honeyrock.multisites.ai/contact-us
---

# ENERGY STAR climate zone

An ENERGY STAR climate zone is a region of the country with its own limits for the U-factor and SHGC a window must meet to qualify.

ENERGY STAR splits the country into climate zones. Each zone has its own targets, because a window that suits Minnesota winters is not the best choice for a Texas summer. Hot regions tend to stress a low SHGC. Cold regions stress a low U-factor.

To check a product, find the zone for your county and compare it with the [U-factor](https://honeyrock.multisites.ai/glossary/u-factor) and [SHGC](https://honeyrock.multisites.ai/glossary/shgc) on the [NFRC label](https://honeyrock.multisites.ai/glossary/nfrc-label). Do not assume one rating works everywhere. Our page on energy-efficient windows in Texas explains how to choose for North Texas, and the guide to SHGC and U-factor for Texas goes deeper.

[Where it mattersEnergy-efficient windows for Texas](https://honeyrock.multisites.ai/energy-efficient-windows-texas)

## Related terms

-   [SHGC (Solar Heat Gain Coefficient)](https://honeyrock.multisites.ai/glossary/shgc)
-   [U-factor](https://honeyrock.multisites.ai/glossary/u-factor)
-   [NFRC label](https://honeyrock.multisites.ai/glossary/nfrc-label)
-   [Low-E coating](https://honeyrock.multisites.ai/glossary/low-e-coating)

![A modern home with wide glass doors lit warm at dusk beside a pool](https://honeyrock.multisites.ai/_astro/dusk-modern-home-pool-01.CeePxgPr_Z2giQin.webp)

## Let’s frame your view.

Send your plans or a few photos of the openings. We will help you choose the system, the brand and the glass.

[Start your project](https://honeyrock.multisites.ai/contact-us)[or call (214) 484-9982](tel:+1-214-484-9982)