If a baseball smashes through your window, you’ll definitely need to replace the glass. But there are a few other reasons to replace the windows in your home, with potential benefits for your home’s comfort, curb appeal or energy bill.
Though it’s not true that you “need to replace your windows after 20 years,” glass on older windows can become foggy or the window itself can become difficult to open, defeating their purpose. They can also start to let in colder or warmer air from outside, requiring you to spend more on heating or cooling your home. Older windows may also be easier to break into, which can affect your home’s security.
Many new windows are made specifically with energy efficiency in mind, and some have automation capabilities, like opening and closing with a button or advanced locking mechanisms. Most can be customized to match the style of your home and come with warranties that cover the windows for at least 20 years.
Why replace your windows?
1. Not functional
If your window doesn’t serve its intended purpose, it may be time for a replacement. A window that should open can become stuck due to warping or being painted over, making it difficult or dangerous to use, and making it harder to clean.
Windows should also be clear to see out of; some older double-pane windows can become cloudy or accumulate moisture between the panes.
2. Poor energy efficiency
Windows can be energy-inefficient for several reasons. Leaks or gaps can let in drafts and bugs, let out air conditioning in the summer or let in water during a storm. If you see condensation on the inside of your window, it may be a sign of a leak.
The glass itself can also change the temperature of your home: single-pane windows aren’t as good as multi-pane windows at blocking solar heat. If your furniture or rug is faded near the window, it may not be blocking UV effectively. Although it may be more expensive upfront, an energy-efficient window can ultimately save you money on energy costs.
3. Appearance
Your current windows may not fit your aesthetic due to their materials or style, or you may want to improve your home’s curb appeal and potentially increase its value when it comes time to sell.
On average, a vinyl window replacement recoups 67% of its home value cost, according to the 2024 Cost vs. Value Report from Zonda Media, a company that provides data about home construction in North America.
4. Outdoor noise
The quality of your windows can make a big difference in your home’s noise levels, especially if you live near a busy intersection or train, for example.
New windows with an airtight seal and multiple panes can significantly reduce the noise that leaks into your home. Some window companies even offer soundproofing packages that pair different glass types to block even more sound.
How many windows should I replace?
You can replace a single window at a time, but you may get a better deal from a window company when replacing an entire room or home’s worth through a single installation.
Angi, a website that connects homeowners with home service professionals, recommends replacing at least five to eight windows at once to get a better price per window, and at least 10 to get the best possible deal. According to Angi, most window installers will charge a flat rate for a full day’s work.
How much do new windows cost?
Replacing an individual window can cost from $300 to $2,500. Whole-house window replacement projects typically cost homeowners an average of over $7,000. Prices vary depending on the company, window style, materials and location of the windows in your home.
Do I have to replace windows after a certain period of time?
There’s no set period of time after which you have to replace your windows — some historic homes have maintained their windows for hundreds of years. However, if your home was built before 1978, your windows may have been painted with lead paint. Cracked or peeling lead paint poses a health risk, according to the Environmental Protection Agency, and should be cleaned up by a certified lead-safe contractor.
