How Much Do Triple-Pane Windows Cost? (2024)

By Amanda Lutz Updated April 25, 2024

Typical costs range from $400 to $3,540.

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Triple-pane window costs typically range from $400 to $3,540, but most homeowner will pay around $1,920 on average. If you live somewhere with very hot summers or very cold winters, it can be difficult to maintain a comfortable home temperature while keeping energy costs low. Installing triple-pane windows can help you meet both goals.

Many top-rated window manufacturers sell triple-pane windows. We’ll explore the various considerations when installing triple-pane windows below.

Note: Article cost data via Fixr and Home Advisor.


Triple-pane windows, also called triple-glazed windows, have three panes of glass. The panes are separated by air or spacer gas. They’re more expensive than single- or double-pane windows but provide better insulation against heat and sound. They’re also slightly more secure, since it’s harder to break through three panes of glass than one or two.


Triple-Pane Windows Cost Factors

How much triple-pane windows cost primarily depends on the window size, glass type, and frame material.

Cost by Window Size

Larger windows require more glass to produce, so price increases with size. Typically, triple-pane windows cost between $25 and $40 per square foot. Here’s how that works out for various sizes. Note that these prices don’t include installation costs.

Window Size (in Inches)Square FootagePrice Range
24×366$150–$240
24×528.67$216.75–$346.80
32×4810.67$266.75–$426.80
32×5211.55$288.75–$462
36×7218$450–$720

Cost by Frame Material

The most common window frame materials are aluminum, vinyl, fiberglass, and wood. Aluminum is typically the least expensive but is also the worst insulator. For this reason, aluminum windows are only recommended in very mild climates. Vinyl frames are affordable and much better at preventing heat loss. They’re fairly durable but may warp or crack in extreme temperatures.

Though more expensive, fiberglass window frames are sturdy and highly insulating. They can be designed to look like wood but require much less maintenance. Real wood is often the costliest option, and it requires regular maintenance in the form of staining or painting. However, some homeowners prefer a wooden window frame’s classic look to other materials.

Labor Cost

Three panes of glass make for a heavier window, so triple-pane window installation is more expensive than double-pane window installation. About $100 to $800 of the total cost goes toward labor. The price may be higher if the window is above the first floor or otherwise difficult to access.

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Window Replacement Cost

Replacement windows on average range from $300 to $1,200.

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Windows with fixed top sash and bottom sash that slides up, sash divided by white grilles a surrounded by white elegant frame horizontal white vinyl siding on a new construction residence
Single-Hung Windows

Single-hung windows on average cost $150 to $400 per window.

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Energy Efficient Upgrades

Double-pane installation typically ranges from $450 to $1,000 per window.

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Other Potential Cost Factors to Consider

Here are some extra costs you may encounter when installing triple-pane windows.

Design

The type of window you’re replacing affects the cost, but this is mainly due to size. For example, large picture windows or bay windows cost much more than standard double-hung windows.

Glass Coating

All triple-pane glass is energy-efficient, but some windows have extra coatings or treatments that further increase efficiency. A low-emissivity treatment, also called a low-e coating, is a colorless glass coating that reduces the amount of ultraviolet (UV) radiation that passes through the glass. In turn, less heat passes through the glass panes without blocking visible light. Low-e glass usually costs about 15% more than untreated glass at approximately $460 to $4,071 per window. This reduces energy bills and protects your belongings from fading and UV damage.

Manufacturer

Leading brands including Andersen, Pella, Simonton, Milgard, and Ply Gem all sell triple-pane windows. Pella and Milgard have more budget-conscious offerings, while Andersen and Simonton typically sell higher-end options. Not all window brands offer triple-pane window options.

Spacer Gas

Manufacturers can increase multipaned windows’ insulation by filling the spaces between the panes with nontoxic noble gasses rather than air. Although no window is truly soundproof, these insulating gasses can improve noise reduction by up to 20%. The most common spacer is argon gas. Krypton gas is less common and slightly more effective, but it’s also expensive—up to 40% more than argon. Our research indicates that argon-filled windows provide the best balance of energy efficiency and financial value.


How to Reduce Triple-Pane Window Costs

Use the following tips to save money on the total cost of window replacement.

Stick with standard sizes and designs, which are generally more cost-effective and easier to find.

Choose an inexpensive yet energy-efficient frame material. We recommend vinyl.

Do multiple window replacements at once to save money on overall labor costs. 

Try to schedule your window replacement during the contractors’ off-seasons of summer and winter.

Get estimates from at least three local contractors. Negotiate when possible.


Triple-Pane vs. Double-Pane Windows

Double-pane windows are more common, but triple-pane windows have some distinct advantages. Here’s how these window types compare.

Double-Pane Windows

Triple-Pane Windows


Cost

$150–$1,290

$400–$3,540


Frame materials

Aluminum, fiberglass, vinyl, wood

Aluminum, fiberglass, vinyl, wood


Energy efficiency

R-value of 2 to 4

R-value of 3 to 8


Noise reduction

Good (STC 26 to 32)

Better (STC 26 to 38)


Size and design options

Many options

Fewer options

Double- and triple-pane windows are available with the same frame materials, but because triple-pane windows are less common, there may be fewer size, color, and design options. The biggest differences between the two are cost, energy efficiency, and sound reduction

Though more expensive, triple-pane windows provide increased energy savings and reduced noise transfer. Almost all triple-pane windows are Energy Star-rated, meaning they provide superior insulation and energy efficiency. This is reflected in their higher R-value, which is a measure of heat retention. The higher the number, the more efficient the window. Similarly, triple-pane windows’ sound transmission class (STC) often exceeds that of double-pane windows, though the difference is more modest.


Professional vs. DIY Triple-Pane Window Installation

In nearly all cases, homeowners should hire professional window contractors to install triple-pane home windows. Here’s what you can expect.

Professional Triple-Pane Window Installation

The three panes of glass make triple-pane windows substantially heavier than double- or single-pane windows, especially if the window is large. Thus, it’s best to leave this project to experienced professionals with the correct equipment. You’ll pay extra for labor, but you’ll have peace of mind that the job is done correctly. We specifically recommend hiring a professional for any large windows or windows on the second floor or higher.

DIY Triple-Pane Window Installation

If you have substantial do-it-yourself (DIY) experience and your new windows are small and on your home’s ground floor, you may be able to do the installation yourself. You’ll start by removing the old windows. Then, you’ll prepare the existing frame and spray in new insulation. After installing each new window, you’ll caulk any gaps and then prime and paint the frame. Note that no matter how energy-efficient the window is, it will leak air and waste energy if installed improperly.


How to Hire a Professional

When comparing window contractors, here are some factors our team finds to be important.


Our Recommendation

The best replacement windows for your home depend on your needs and budget. We recommend triple-pane windows if energy efficiency is your priority. These windows cost more than standard double-pane windows, but you’ll eventually get a return on investment thanks to long-term savings on your energy bills. Triple-pane windows are especially beneficial if you live in an area subject to extreme temperatures or you plan to live in your home for a long time.


Triple-Pane Window FAQ

How do triple-pane windows work?

Triple-pane windows reduce heat and sound transfer by alternating layers of glass with dense spacer gas. These layers provide extra insulation that blocks heat without reducing visible light, increasing your home’s energy efficiency.

Are triple-pane windows worth it?

Although triple-pane windows are more expensive than double- and single-pane options, they’re worth the extra cost in some circumstances. We recommend them for homes in climates that experience very hot or very cold weather, as they’re more insulating. The return on investment from energy savings will be relatively slow, so they’re also best for homeowners who plan to stay in their current homes for a long time.

Do triple-pane windows reduce sound?

Yes, triple-pane windows reduce sound better than single- and double-pane windows. However, the difference in sound reduction between a new, high-quality double-pane window and a similar triple-pane window is typically modest.

Do triple-pane windows reduce energy costs?

Yes, triple-pane windows reduce energy costs more than their double-pane counterparts.


How We Chose the Top Window Brands

We researched and analyzed dozens of window manufacturers. We then crafted a rating system based on each brand’s standard and energy-efficient product offerings.

We spoke directly to representatives at each company to learn how the installation process works and determine how each brand personalizes its windows for each home. We also closely analyzed each company’s warranty options to ensure their product and labor guarantees match or exceed industry standards. 

Finally, we assessed the manufacturer’s years of experience and customer reputation. In addition, we analyzed the 100 most recent Google Reviews for each provider across various locations and branches.