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How Much Do Triple-Pane Windows Cost?

Average Cost
? All cost data throughout this article are collected using the RS Means construction materials database.
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$400 - $3,540

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Updated On

January 11, 2024

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If you’re preparing to buy new windows, you’ve likely come across the many glass options: single-pane, double-pane, and triple-pane window glass. The differences between a single-pane window and a triple-pane window may not be immediately obvious. However, there is a significant difference in quality, durability, noise-proofing, and energy efficiency that is worth considering before you invest in new windows.

The windows in your home play an essential role in security, energy efficiency, and comfort. With triple-pane windows, these benefits are amplified — especially compared to single-pane windows. On average, triple-pane windows cost between $400 and $3,540 per window, depending on various factors. Keep reading for this in-depth breakdown of the factors that impact the cost of triple-pane windows and if these windows are worth the higher price tag.

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  • As the name implies, triple-pane windows feature three panes of glass. Each pane has a spacer separating it from the next, ensuring the glass remains equally spaced apart.
  • Triple-pane windows are a robust, durable choice for many homes and help reduce unwanted outside noise.
  • While installing triple-pane windows as a DIY project is doable for some homeowners, it can be out of range for inexperienced DIYers. In these cases, it’s usually better to hire a professional.

What Are Triple-Pane Windows?

As the name implies, triple-pane windows feature three panes of glass. Each pane has a spacer separating it from the next, ensuring the glass remains equally spaced apart. The space between the glass panes is full of air — usually argon or krypton gas — which aids in insulation, sound buffering, and energy cost reduction. 

Better Insulation

The space between the panes is gas-filled in triple-pane windows. The gas between the glass acts as an insulating layer, making sure warm or cool air remains in your home to keep the interior temperature stable. 

Today’s Homeowner Tips
This gas is colorless, non-toxic, and odorless, making it a safe, suitable choice for insulating your windows. According to the International Association of Certified Home Inspectors, while leaks are uncommon, a leaky or broken window releasing its gas doesn’t present a health concern. 

Durable Construction

Triple-pane windows are a robust, durable choice for many homes. They often feature the best fiberglass or vinyl frames for you, which are long-lasting and strong enough to withstand harsh weather and continuous sunlight. 

Also, the triple-layered glass design offers extra layers of security. Impacts on the glass may not break all three layers, leaving one or two panels intact. This saves you the trouble of temporarily patching the window while you wait for repairs, keeping your home weather-proof and free of accidental entry points until you can pay to fix the window

Effective Sound Reduction 

As sound waves travel, the windows act as a stumbling block. Glass panes and framing weaken, absorb, and minimize sound waves, ensuring your home remains quiet. Compared to single- and double-pane windows, triple-pane models are the most soundproof. 

Sounds in the environment — traffic, barking dogs, playing children, or neighbor’s conversations — can travel into your home, disturbing your peace and quiet. With triple-pane windows, these sounds become muted. 

Reduced Energy Costs

The windows in your home play a critical role in keeping warmed or cooled air inside. Old, drafty windows force your HVAC system to work overtime to maintain an even temperature. 

Researchers have found that 19% of heating energy and 39% of cooling energy are lost through the windows of a typical single-family residence. In this study, researchers installed triple-pane windows in test homes to demonstrate the reduction in energy costs. By installing these windows, test homes saved an average of 12% on heating and a whopping 28% on cooling costs. The lower heat loss and better insulation mean triple-pane windows are incredibly energy-efficient. 

Additionally, replacement windows bearing the ENERGY STAR certification can offer around 12% savings on household energy bills for the average home. 

Window Replacement
Window replacement typically costs between $400 and $1,000, depending on the type & material.
man repairing crack window
Window Repair
Leak repairs may cost $50 to $150, while more critical issues like frame damage can cost up to $1,000.
Energy Efficient Glass
Upgrading your home’s windows with double or triple-pane glass may range from $700 to $2,000+.

What Is The Cost of Triple-Pane Windows? 

The cost of triple-pane windows stems from multiple factors, including materials, project size, window measurements, and installation methods. Each factor contributes to the final cost of your triple-pane window installation, driving the number higher or lower. 

Average Cost for Triple-Pane Windows

On average, a triple-pane window (materials only) costs between $300 and $2,740 — although customized or oversized windows can be pricier. With installation, the price averages out to $1,100, or between $400 and $3,540 per window. Costs vary drastically based on factors specific to the installation, such as the number of floors and windows, so your project might be higher or lower than the average cost range. 

Installation and Materials Cost Breakdown

Materials and installation costs make up most triple-pane window costs. The chart below outlines average costs to provide a general guide. 

Factor Cost
Average project range (with installation)$400 to $3,540
Average cost per window (materials without installation) $300 to $2,740
Average labor costs per window$100 to $800
Price per square foot$25 to $40

Factors That Impact the Cost of Triple-Pane Windows

The cost of your triple-pane windows will vary based on factors specific to your situation. Factors like customization, sizing, professional labor costs, and permits can drive the total up or down for this home improvement project or construction. 


Like many products, windows come in varying brands — some pricier than others. As you browse through triple-pane window brands, consider pricing based on the brand. If you decide to overhaul your home, it’s worth looking into a more cost-effective brand. 

Learn more: Find the best window replacement company in your area.


In many locations, local building codes require you to obtain a permit before installing your windows — so be sure you check with your local building authority and obtain the necessary permits for your project. The permit cost is usually included in the quote if you hire an installer, but it doesn’t hurt to make sure. 

Project Size

The size of your project plays a significant role in the final number on your project bill. For example, you may pay more for a window if you only replace one. On the other hand, if you’re outfitting your entire home with triple-pane windows, you might pay less per window. 

Today’s Homeowner Tips
Some window suppliers offer deals and promotions after you meet a minimum purchase, reducing the cost per window for your entire project. While these deals might not be available from every supplier, it doesn’t hurt to check.


Window installers have busy seasons and off-seasons, although they usually offer their services year-round. Spring and fall tend to be busier seasons — you can generally expect to pay more if you install your windows during these times of year. Conversely, you might pay less if you outfit your home with new windows during the summer and winter. 

Type of Frame

Sometimes, the existing frame is compatible with the new window. That said, if the frame is in poor condition or doesn’t match the new window’s requirements, you’ll need to replace the frame. This can tack on additional costs, as you’ll need materials to replace the frame and extra labor time if you hire a professional. 

Gas Fills

One of the biggest benefits of installing triple-pane windows is the increased energy efficiency and noise insulation they provide. To maximize this benefit, many homeowners opt for argon or krypton gas fills to further insulate their home.

According to the U.S. Department of Energy, gas fills and spacers minimize heat transfer between the exterior and interior of the window. Odorless, non-toxic gasses like krypton or argon gas improve the window’s thermal performance, reducing your home’s energy bills.


Spacers are sealants used to “space” the layers of glazing. They allow the windows to expand with weather and pressure differences, preventing gas and moisture leaks. Look for “warm edge” spacers for the best results as these spacers lower the window U-factor and condensation, lowering your utility bills and energy consumption.

Overall, triple-pane windows with gas fills and spacers will be more costly, but the energy savings make up for the cost for many homeowners.

Window Sizing and Customization

Like most products, larger or customized triple-pane windows are pricier than their smaller or pre-made counterparts. These windows usually require extra time and labor to complete the manufacturing and installation processes, making them more expensive. 

For example, if you’re installing a custom triple-pane bay window, you can expect to pay more than if you were installing a generic double-hung window.

Find Window Cost Estimates In Your State

Do Triple-Pane Windows Increase Home Value?

While triple-pane windows can increase your home’s value, the amount hinges on your location. In warm, mild climates where triple-pane windows are uncommon and pricey, it’s unlikely that installing them will significantly increase your home’s value. 

However, if you live in a cold, extreme climate, installing triple-pane windows can increase your home’s value. Double-pane and triple-pane windows are relatively standard in these areas, as they improve insulation and reduce energy loss, so they can increase your home’s value. 

Triple-Pane Windows vs. Double-Pane Windows

Triple-pane and double-pane windows can be excellent investments for many homes. Both feature multiple layers of glass, offering an edge over single-pane windows. These windows provide a range of benefits, with several similarities and a few differences. 

triple pane windows cost
Double-pane window and triple-pane window cutaways, Courtesy of Simonton Windows

Cost Differences

Triple-pane windows are typically pricier than double-pane windows by a decent amount. On average, you can expect to pay 10%–15% more for triple-pane windows than for double-pane windows. Of course, pricing varies based on various factors, so the differences may be minor in certain scenarios. The affordable cost of double-pane windows, when compared to triple-pane, makes it a better alternative for those on a budget.

Energy Efficiency

While double-pane and triple-pane windows are significantly more energy efficient than single-pane windows, triple-pane options offer an edge over the double-pane variety. Compared to a single-pane window, triple-pane windows can offer an impressive 50% improvement in energy efficiency.

With a double-pane window, the difference is smaller, as triple-pane windows are only 20% more energy efficient than double-pane windows. Although the difference is smaller, this improvement can significantly affect heating and cooling costs for homes in extreme climates, especially when combined with other energy-efficiency features like low-E coatings. 

Safety and Durability

Both are surprisingly safe and durable, especially compared to single-pane windows. The multiple layers of glass add extra security, making it more challenging to break through. Even if one layer of glass breaks, you might still have one or two layers of glass intact, protecting your home from harsh winds.  

While they’re both durable, triple-pane glass windows have the advantage. That extra layer of glass makes breaking through the entire window even harder. On top of that, they’re heavier than other types of windows, making them more resistant to damage. 

DIY vs. Professional Installation

While installing triple-pane windows as a DIY project is doable for some homeowners, it can be out of range for inexperienced DIYers. In these cases, it’s usually better to hire a professional. However, if you can do the project yourself, you can cut labor costs and save money. 

That said, it is a complex process. First, you will need the correct tools: 

  • Hammer
  • Drill
  • Level 
  • Pry bar
  • Tape measure
  • Screwdriver
  • Caulk and caulk gun
  • Waterproof shims
  • Putty knife
  • Insulation 
  • Expanding Foam

Once you gather the proper tools, you can start installing your triple-pane window. 

  1. Remove the interior stops with the pry bar.
  2. Test the fit of your new window. 
  3. Stuff the window sash weight cavity with insulation. 
  4. Apply caulk along the inside of the backside of the window stool. 
  5. Place the new window. 
  6. Use shims to get the window level and plumb.
  7. Test that the window opens with no issues. 
  8. Fasten the window jab with screws on the left and right while ensuring the window is level and plumb. 
  9. Check that the window is square by measuring diagonal from corner to opposite corner both ways. The two diagonal measurements should equal each other. If the window is not square, use shims to make it square. 
  10. Ensure the window is plumb; if not, make it so with shims. 
  11. Reinstall the window trim. 
  12. Insulate under the sill of the new window. 
  13. Caulk the window joints outside. 
  14. Paint the trim (if necessary). 
Today’s Homeowner Tips
If you’re unfamiliar with window installations, hiring a professional is best. With this route, you can expect to pay extra for labor costs. The total amount you’ll spend on labor will vary based on project size and difficulty. 
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So, Are Triple-Pane Windows Worth the Money?

Triple-pane windows cost between $400 and $3,540 with installation. This pricing varies based on brand, the number of windows, the type of frame, and how many floors your home has. For many homeowners, the selling points of triple-pane windows are improved security, noise reduction, and durability.

However, if energy efficiency and insulation factors aren’t important to you, these windows might not be worthwhile. Remember, energy efficiency benefits have the most dramatic results in extreme climates, so triple-pane windows might be more than you need if you live in a mild climate. Even if you don’t see dramatic energy efficiency improvements, you can still enjoy improved security, noise reduction, and durability.

If you’re uncertain if triple-pane windows are the right choice for you, I recommend exploring our single, double, and triple-pane windows comparison. This resource can help you further understand the advantages and disadvantages of each option. Whether you prioritize energy efficiency, noise reduction, or budget considerations, our comprehensive guide will aid you in finding the most suitable solution for your home.

FAQs About Triple-Pane Windows

Do triple-pane windows reduce sound?

Triple-pane windows offer solid sound reduction, especially compared to single-pane windows. The layers of glass weaken, absorb, and minimize sounds from outside, ensuring your home remains comfortably quiet.

How much does the average triple-pane window cost?

On average, a triple-pane window costs $1,520. However, the average range extends from $300 to $2,740 for materials alone, so the cost of your new window might be higher or lower than the average cost.

How much do triple-pane windows save?

The amount you’ll see in energy savings by switching to triple-pane windows depends on which windows you had before. If you’re switching from single-pane windows, you might see up to 50% improvements in your home’s energy efficiency. Conversely, if you’re switching from double-pane windows, you might see up to 20% improvements in energy efficiency.

What are the benefits of triple-pane windows?

Triple-pane windows offer many benefits, especially compared to their single-pane companions. They offer better sound insulation, ensuring your home remains quiet. They also improve your home’s energy efficiency, relieving your HVAC system by trapping heated and cooled air. In addition, they offer superior security and durability via a heftier, more robust construction.

What are the disadvantages of triple-pane windows?

Triple-pane windows are more expensive than single-pane windows and double-pane windows as they require more material to make. Installation costs for triple-pane windows are also higher because these windows require a sturdier frame, which requires more installation time. Lastly, some homeowners note that these windows reduce brightness because of the thicker glass, which may be good or bad depending on your preference.

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Reviewed for accuracy, cost data, industry best practices, and expert advice by Amy DeYoung.
Editorial Contributors
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Jonathon Jachura


Jonathon Jachura is a two-time homeowner with hands-on experience with HVAC, gutters, plumbing, lawn care, pest control, and other aspects of owning a home. He is passionate about home maintenance and finding the best services. His main goal is to educate others with crisp, concise descriptions that any homeowner can use. Jon uses his strong technical background to create engaging, easy-to-read, and informative guides. He does most of his home and lawn projects himself but hires professional companies for the “big things.” He knows what goes into finding the best service providers and contractors. Jon studied mechanical engineering at Purdue University in Indiana and worked in the HVAC industry for 12 years. Between his various home improvement projects, he enjoys the outdoors, a good cup of coffee, and spending time with his family.

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Amy DeYoung


Amy DeYoung has a passion for educating and motivating homeowners to improve their lives through home improvement projects and preventative measures. She is a content writer and editor specializing in pest control, moving, window, and lawn/gardening content for Today’s Homeowner. Amy utilizes her own experience within the pest control and real estate industry to educate readers. She studied business, communications, and writing at Arizona State University.

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