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Photo of a home showing windows, skylights, and sliding glass doors.
Photo by Thomas Kelsey / U.S. DOE Solar Decathlon

Windows, doors, and skylights鈥攁lso known as fenestration鈥攁re significant components in a home's envelope. Ensuring they are as energy efficient as possible can save energy; reduce heating, cooling, and lighting costs; and improve the comfort of your home.

Shopping for Efficient Windows, Doors, and Skylights

鹿鼎彩票代理 Performance Ratings for Windows, Doors, and Skylights
鹿鼎彩票代理 performance ratings make it easier to shop for energy-efficient windows, doors, and skylights.
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Window, Door, and Skylight Products and Services
Find product information and locate professional services for windows, doors, and skylights.
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鹿鼎彩票代理 Efficient Windows

Update or Replace Windows
Windows affect home aesthetics as well as energy use.
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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.
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Storm Windows
If your budget is tight, storm windows are less expensive than new, energy-efficient windows.
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鹿鼎彩票代理 Efficient Window Attachments
Choose window treatments and attachments that allow you to use natural light while reducing the heat gained.
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鹿鼎彩票代理 Efficient Doors

Doors
Replacing or caulking and weatherstripping exterior doors can save money and energy in your home.
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鹿鼎彩票代理 Efficient Skylights

Skylights
When properly selected and installed, an energy-efficient skylight can help minimize your heating, cooling, and lighting costs.
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Cold Weather Window Tips

  • Install tight-fitting, insulating window shades on windows that feel drafty after weatherizing. Consider insulated cellular shades, which are 鈥渉oneycombed鈥 and can be raised or lowered. Obtain energy efficiency ratings for window attach颅ments from the Attachments 鹿鼎彩票代理 Rating Council.
  • Close your curtains and shades at night to protect against cold drafts; open them during the day to let in warming sunlight.
  • Apply low-e film on the inside of your windows to keep heat from radiating out. Films are rated by the NFRC and will be rated by the AERC.
  • Alternatively, install low-e exterior or interior storm windows, which can save you 12%鈥33% on heating and cooling costs, depending on the type of window already in颅stalled in the home. They should have weatherstripping at all movable joints; be made of strong, durable materials; and have inter颅locking or overlapping joints.
  • Repair and weatherize your current storm windows, if necessary.

Warm Weather Window Tips

  • Install white window shades, drapes, or blinds to reflect heat away from the house. It is always best to install exterior shades whenever possible
  • Close curtains on south- and west-facing windows during the day.
  • Install awnings on south- and west-facing windows to create shade.
  • Apply sun-control or other reflective films on south-facing win颅dows to reduce solar heat gain. In hot climates, consider adding them to east, west, and south-facing windows.
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