Department of Energy

Windows, Doors, & Skylights

You are here

Energy-efficient windows, doors, and skylights—also known as fenestration—can help lower a home's heating, cooling, and lighting costs. Learn about the energy performance ratings to consider when selecting windows, doors, and skylights, and how to maximize their energy efficiency in your home.

Featured

Update or Replace Windows
Windows affect home aesthetics as well as energy use.
Learn More
Window Types and Technologies
Combine an energy efficient frame choice with glazing materials for your climate to customize your home's windows and reduce your energy bills.
Learn More
Energy Efficient Window Attachments
Choose window treatments and attachments that allow you to use natural light while reducing the heat gained.
Learn More
Storm Windows
If your budget is tight, storm windows are less expensive than new, energy-efficient windows.
Learn More
Doors
Replacing or caulking and weatherstripping exterior doors can save money and energy in your home.
Learn More
Skylights
When properly selected and installed, an energy-efficient skylight can help minimize your heating, cooling, and lighting costs.
Learn More
5 Steps to Making Your Windows More Energy Efficient

Whether you're a professional home performance contractor or a do-it-yourself homeowner, learn five simple steps for making your windows more...

Learn More

Tips and Advice

Window, Door, and Skylight Products and Services

Related Publication

Energy Saver Guide

Follow Us

Rebates & Tax Credits

Federal tax credits for efficient residential windows, doors, and skylights expired at the end of 2016. If you made these improvements in 2015 or 2016, file form 5695 with your taxes to claim the credit. Learn more about the tax credits and find state or local incentives.

Energy-efficient windows, doors, and skylights—also known as fenestration—can help lower a home's heating, cooling, and lighting costs. Learn about the energy performance ratings to consider when selecting windows, doors, and skylights, and how to maximize their energy efficiency in your home.