Replace Single-Pane Windows
If you have single pane windows, upgrading to energy efficient double-pane windows can reduce heating and cooling bills by 20% or more and creates a cozier, more comfortable home.
Your Impact
Action Steps & Tips
Introduction
If you have ever been right next to a single pane window in the winter, you can feel the cold coming right through. It is the same in the summer—the hot air comes right in through the window.
Double pane windows are highly energy efficient and exactly what they sound like—a window with two panes of glass. The extra pane allows for sealed air (or non-toxic gases such as argon or krypton) to be added in the space between, creating a layer of insulation that helps to keep your home warm in the winter and cool in the summer.
Double pane windows:
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Significantly reduce energy bills and save money
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Improve the comfort of your home
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Reduce noise and are more durable
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Can increase the value of your home
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Reduce climate and air pollution
However, new double-pane windows can be an expensive project. They can cost from $500-600 or more per window with professional installation and have a long payback. There may be rebates and financing options available to help lower the cost though. Consider getting a Home Energy Checkup to explore rebates and financing options and compare the cost to other possible home energy efficiency actions like window coverings or window film. Below are a few tips and things to consider.
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, 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. 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.
2Costs and rebate programs
Check payback time. New double-pane windows can cost $500-600 or more per window for professional installation. There are often rebates and tax incentives available, however, even with rebates, it can take 10 years or more to cover the upfront costs through energy savings. If you get a Home Energy Checkup or work with a contractor, they can often help with finding rebates and financing options.
Consider other lower cost window upgrades. If upgrading your windows is not in the budget or 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. Check out the Sealing Air Leaks action to learn more. Using cellular shades or other window coverings can also help. Check out the Be Heat Wise and Stay Cool actions for more information.
3Choose the right windows
When choosing your new windows, one of the most important factors is to match the windows to your climate. Check with your contractor or installation company to help you choose which windows are right for your area.
Window frames also make a difference. Here are a few options:
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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.
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.
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.
Then enjoy the view and your comfier, cozier home!