Replace Single-Pane Windows
Replacing single-pane windows with energy efficient double-pane windows can reduce heating and cooling bills by up to 20% or more. It will also make your home more comfortable—cozier in the winter and cooler in the summer.
Your Impact
Action Steps & Tips
Introduction
New double-pane windows cost from $450-600 or more per window for professional installation—not cheap. Because this is an important energy efficiency action, there are often rebates and financing options are available to help lower the cost for homeowners that want to make this upgrade. Whether this is a good action for your home will depend on a few different factors. Read below to learn more!
1Identify windows that need replacement
The first step is to identify which windows should be replaced. Consider replacing the following:
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Single-pane windows
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Older double-pane windows that are drafty or damaged
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Damaged windows that have signs of rot or mold
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Windows installed in the 1970s or before (may contain lead paint)
Inspect. Start by inspecting the windows in your home, checking each one for drafts or signs of damage. Determine if you have any single-pane windows. If you are unsure, try the flashlight test. Shine a flashlight at your window. If you see one flashlight reflection, you have single-pane windows. If you see two, you have double-pane windows.
Also, look for signs of mold or rot around all window frames, which indicates the windows are not working properly. Some problems can be hard to detect. If you are not sure if a window should be repaired or replaced, ask for input from a licensed contractor or home inspector. Or better yet, sign up for a Home Energy Checkup where you can get a custom professional recommendation on the best energy efficient upgrades for your home!
2Learn about the costs and rebate programs
New double-pane windows can cost $450-600 or more per window for professional installation. Because this is an important energy efficiency action, there are rebates and tax incentives available to help lower the cost. However, even with rebates, it can take 10 years or more to cover the upfront costs through energy savings. Financing can help spread out the cost over time, making the action more affordable.
Check payback time. Before moving forward with a window replacement be sure to check the payback time for your home and check the resources section for information on rebates and financing options. Another option is to sign up for a Home Energy Checkup. You will receive a custom professional recommendation on the best energy efficient upgrades for your home and they can usually help you identify rebates and financing options as well.
Other window upgrades. If upgrading your windows is not in the budget at the moment or is not a good investment for your home, consider other ways to improve window efficiency. Filling cracks and gaps around windows with caulking or weatherstripping can help save energy and money. Check out the Weatherizing Home action for more information. Using drapes, shades or fans can also help. Check out the Be Heat Wise and Stay Cool actions for more information.
3Choose the right windows
Window frames make a difference and choosing the right material for your home and your budget will add to your new windows’ value. Options include vinyl, wood, aluminum, and fiberglass.
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Vinyl framing is the most cost effective and energy efficient choice, it is also low-maintenance and durable.
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Wood framing is beautiful, but more expensive and requires more maintenance.
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Aluminum is the lowest cost option, but much less energy efficient.
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Fiberglass, the newest option, is durable, low maintenance and more energy efficient than vinyl. Fiberglass windows generally cost more than vinyl, but less than wood.
Another tip—price does not always indicate performance. Some of the most energy efficient and effective windows are at the lower end of the price range. Be careful not to overspend on fancy options that will not improve performance.
4Install your new windows
Similar to window selection, installation is best done by a professional to ensure the best energy efficiency and performance. Contact a licensed contractor to install your windows.
Enjoy the view! With your new windows installed, enjoy the view and your comfier, cozier home.