How much does it cost to replace double-pane windows?

Reviewed by Gianna Cappuccio remodeling expert. Written by Fixr.com.

If you’re thinking about installing double-pane windows on your home, but don’t know where to start, never fear! Later on in this article, we’ll tackle the many factors that go into pricing double-pane windows, but let’s start with an average cost just to get our feet wet:

The national average cost to install ten double-paned windows ranges from $4,794 to $8,723, with most homeowners paying around $6,700 for the installation of ten vinyl, double-pane, double-hung windows with a low-E coating. 

This is a great starting point, but the cost of double-pane windows depends on size, frame material, and more—all of which we’ll explain.

Double-pane windows cost

Key takeaways

• Double-paned windows are made with two panes of glass with a space between them.
• Double-paned windows are much more energy-efficient than single-paned windows.
• The glass panes are often treated with a low-emissivity coating that blocks temperature losses
• The space between the panes of many double-pane windows is filled with a safe, inert gas like krypton or argon to boost insulation
• Most windows come with a warranty for the window and installation. Low-cost models generally have a warranty of 3 to 5 years, but higher-quality options may carry a warranty of 15 to 20 years.

Factors affecting the cost of double-pane windows

How much do double-pane windows actually cost? We’ve compiled some averages for you to peruse, but the honest answer is that multiple factors determine the cost of double-pane windows, such as the number of windows being installed, the frame materials, glass type, style, and brand. 

We’ve provided estimates so you can make an informed decision on your double-pane window installation. Let’s get into it.

Number of windows being installed

Like many purchases, buying in bulk can get you a discount when you’re shopping for double-pane windows! For example, replacing one window vs. 20 windows will still require a similar amount of prep, travel, labor, and paperwork for your contractor. Getting everything done at once involves less work overall for your contractor, meaning they will often give you a discount at a higher volume. The table below illustrates the kinds of discounts you might see.

Materials

The material of the window frames and glass is one of the most important factors in double-pane window cost. Some window materials cost less to install but sacrifice energy efficiency and long-term savings, while others cost more initially but are as energy efficient as possible and will save money throughout their lifetime. Here are the average costs of the most popular frame materials and glass types used with double-pane window installations so you can make the best choice for your home.

Frame materials

Glass Types

Window style

The style or type of windows you want to install in your home also significantly affects their price. For example, a flat picture window and a bay window of similar size will have significantly different prices due to the complexity of their design and higher install costs; other factors include whether and how a window opens for ventilation. You can find more information on the different types of windows below.

Costs by brand: what’s the most affordable option?

Just like when you’re buying a car, the brand name definitely makes a difference in what you will pay for double-pane windows. Included in the table below are some of the most common manufacturers of double-pane windows and what you can expect to pay.

Labor and installation costs for double-pane windows

Now that you’ve looked through the materials and decided on a style, let’s talk about labor and installation costs. Included in the table are the average costs to put in double-pane windows, but keep in mind that the cost can change significantly depending on where you live and the cost of labor in your region.

In addition to your labor and installation costs, you’ll need to consider the cost of permits for certain types of windows, as well as the difference in cost between just retrofitting the glass panes vs. getting a full-frame replacement.

The cost of permitting is usually pretty straightforward, but it’s best to consult with your window installer to get exact pricing.

As far as a glass retrofit vs. a full-frame replacement, opting for a full replacement entails removing both the window frame and sash entirely. In a retrofit, only the window sash is replaced while the frame and trim remain intact. This can be more cost-effective as there is a lower labor cost compared to a full replacement.

Can I install double-pane windows myself?

While the DIY route is tempting, installing windows is more complicated than it may seem. Unless you are experienced in window installation, we certainly wouldn’t recommend it. Installation requires special tools, materials, and techniques that cost money to buy and become familiar with. Doing the installs even somewhat incorrectly can result in a poor fit and gaps that eliminate any of the energy efficiencies you gain by using double-pane windows. Save yourself the drafts, humidity, and insects that come with a poor seal, and trust the professionals!

Costs to improve energy efficiency

Here’s where double-pane windows get pretty fun. Did you know that you can make them even more energy-efficient with some extra add-ons? Check out this table that breaks it all down!

Are double-pane windows worth the cost?

Double-pane windows clearly offer several benefits. They’re more energy efficient and have better soundproofing, but they can also be considerably more expensive.

It’s important to weigh the pros and cons of any window type to make an informed decision.

Pros and of double-pane windows

Single-pane, double-pane, triple-pane: what’s the difference?

• Single-pane windows have one pane of glass and no insulating gap. They are not typically used in residential homes but are more often found on outside structures like barns or sheds.
• Double-pane windows have two panes of glass and one insulating gap, filled with either air, argon, or krypton.
• Triple-pane windows have three panes of glass and two insulating gaps, filled with air, argon, or krypton.

Additional considerations and costs

Window treatments installation

Replacing your windows also offers a great opportunity to replace your window treatments. Window treatments are drapes, curtains, and shades, which can offer privacy, light blocking, and interior decoration. Window treatments cost $100 to $800 per window, including the hardware, material, and installation.

Window screen installations

Window screens help keep insects and debris out when your windows are open. Many people replace them along with their windows. The average cost of window screen installation is $50 to $91.

Hurricane shutters

If you live in an area with storms and high winds, you may want to protect your new windows by installing hurricane shutters. These are pulled over your windows during a storm, protecting them from damage. Hurricane shutters cost $2,500 to $8,000 to install on 20 windows in your home.

Common repairs

Before you start tearing out your old windows, let’s talk about what you can expect as far as window repair and maintenance issues with double or triple-pane windows. Here are some of the issues people commonly face:

• Moisture buildup: Moisture between double-pane windows means the seal has broken. In this case, the windows are no longer insulating as they should. You may be able to have the window seal repaired, but you need to have it looked at by a professional.
• Cracked glass: Sometimes the glass can be removed and replaced, with new inert gas to fill the gap. However, sometimes the entire window assembly must be replaced, which is much more expensive.
• Drafts and gaps: If the window isn’t installed properly, air will find its way in from outside, negating the energy efficiency gains made with double-pane windows.

Double-pane windows: the bottom line

Double-pane windows save most people money long-term and can be a good investment in your home. Some estimates show that you could save anywhere from 20 to 30 percent on your annual energy bills every year for up to 20 years. To have your double-pane windows replaced, get in touch with one of our trusted contractors in your area.

Frequently asked questions

Are double-pane windows worth the cost?

There are a few factors to consider here. One is the current price of your energy bills. If they’re very high, you will see more of a financial benefit from more efficient windows. Some estimates show that you stand to save 20 to 30% on your annual energy costs. Considering that many double-pane windows will last up to 20 years, you can save quite a bit! However, if your energy costs are low, double-pane windows may not be the right fit. Another consideration is how long you plan to stay in your home. If you don’t plan on staying in your home long-term, it may not make sense to make a financial investment in energy efficiency.

How much is a double glass window?

The cost of a double glass window will depend greatly on the material of the frame, the number of windows replaced at once, the coatings on the glass, the gas used to fill the gap between panes, and many more considerations. Please review our article for a full breakdown of these potential costs.

How much do double-pane, double-hung windows cost?

The cost of a double-pane, double-hung window varies greatly, depending on multiple factors. That being said, we can give a very broad estimate of $400 to $3,250 per window.

What are the cons of double-pane windows?

Double-pane windows have very few cons other than the higher initial cost and the potential for more costly repairs if they are broken. They are also more energy efficient, soundproof, and environmentally friendly.