How Much Do Double-Pane Windows Cost in 2025?
The average cost to install double-pane windows is $1,000
Installing double-pane windows costs an average of $1,000 per window, with prices ranging from $150 to $7,000.
Key cost factors include glass and fill type, frame material, labor expenses, and any hidden problems uncovered during installation.
Double-pane windows improve energy efficiency, reduce noise, and increase home value and comfort.
Hiring a professional window installer ensures proper and long-lasting installation, keeping the project up to code.
This article was updated using automation technology and thoroughly reviewed for accuracy by HomeAdvisor Editor Ryan Noonan.
It costs an average of $1,000 per window to install double-pane windows, with most homeowners paying between $300 and $2,100. Depending on various factors, you might pay as little as $150 or as much as $7,000 per window. The price difference is due to the type of glass, frame type, hidden issues during installation, the size of the windows, and the frequency of window replacement. Hiring a professional installer ensures the job is done right and helps prevent issues that might require more frequent replacements.
What Are Double-Pane Windows?
Double-pane windows have two sheets of glass separated by a spacer, with inert gas trapped between them. This design creates an energy-efficient barrier that helps regulate your home's interior temperature and minimizes heat or cooling loss.
Double-Pane Window Cost Factors
Materials drive most of the price, but labor is a close second. Unless your contractor offers a guaranteed price, reserve some budget flexibility for unexpected issues that may arise during installation.
Labor
Labor can represent a sizable share of the total. Complex jobs—such as replacing a bow window—cost more, and your local window installer should include these details in the quote.
Size
Size is a key factor in the cost of your double-pane windows. To determine the pane size, multiply the width by the height. You'll also need to consider the pane thickness, which ranges from 1/8 inch to one inch.
If you’re replacing only the glass, it’s essential to match the thickness to your existing panes. Changing the thickness would require modifying the frames to accommodate the difference and maintain efficiency.
The prices below reflect the standard cost of double-pane windows, based on a thickness of ½ inch.
| Window Dimensions (Ft.) | Installation Cost |
|---|---|
| 2x1 | $150–$220 |
| 2x3 | $450–$700 |
| 3x2 | $450–$700 |
| 3x4 | $900–$1,300 |
| 4x3 | $900–$1,300 |
| 4x4 | $1,200–$1,800 |
| 4x6 | $1,800–$2,600 |
| 5x3 | $1,100–$1,700 |
| 6x4 | $1,800–$2,600 |
| 7x5 | $2,600–$3,900 |
| 8x5 | $3,000–$4,400 |
| 8x8 | $4,800–$7,000 |
| 10x6 | $4,500–$6,600 |
Window Type
Window style is one of the biggest drivers of cost. Storm window installation costs start at $100 for materials and labor, but a bow, ornate, or oversized window can cost as much as $7,000.
| Window Type | Average Cost Range (Including Labor) |
|---|---|
| Single-hung | $200–$900 |
| Double-hung | $250–$1,100 |
| Sliding | $250–$1,200 |
| Casement | $250–$2,000 |
| Picture | $170–$1,000 |
| Hopper | $150–$600 |
| Bay | $700–$6,000 |
| Bow | $1,600–$7,000 |
Glass and Fill Type
Double-pane windows are often filled with inert argon or krypton gas, which provides excellent thermal protection. You can also add high-efficiency or safety coatings, which will increase the cost of your double-pane windows.
| Glass and Fill Type | Average Cost Range (Including Labor) |
|---|---|
| Tempered | $300–$1,000 |
| Laminated | $400–$950 |
| Frosted | $450–$1,100 |
| Low-E coating | $500–$1,400 |
Frame Material
Some locations legally require vinyl impact or hurricane-rated windows. Vinyl impact and hurricane windows cost more than standard double-pane windows because they utilize more robust materials and offer enhanced protection against storms. Other states have minimum energy-efficiency requirements. Therefore, it’s essential to consult with your local building code office and contractor before replacing a window.
| Material Type | Average Cost Range (Including Labor) |
|---|---|
| Aluminum | $200–$700 |
| Vinyl | $300–$1,500 |
| Wood | $400–$1,800 |
| Composite | $400–$1,500 |
| Fiberglass | $600–$2,500 |
| Steel | $400–$1,500 |
Brand
Because double-paned windows offer the best combination of value, price, and energy efficiency, they're widely available from all top brands. You'll find that some brands only offer vinyl frames, others provide a range of materials, and still others specialize in wood- or metal-framed windows. If you have an older home or one with unusual window shapes, you'll need to choose a company specializing in custom-fit windows.
| Brand | Window Cost |
|---|---|
| Alside | $150–$1,800 |
| Andersen | $250–$3,500 |
| Castle | $200–$2,000 |
| Champion | $200–$2,200 |
| Feldco | $150–$1,500 |
| Harvey | $200–$2,200 |
| Marvin | $250–$4,000 |
| Milgard | $250–$4,000 |
| Pella | $150–$3,500 |
| Ply Gem | $150–$1,800 |
| Simonton | $200–$2,000 |
Permits
Many municipalities require a permit before installing or replacing windows. Your local window installer may often include the building permit fee in the quote, but confirm ahead of time that the contractor will handle the necessary paperwork.
Seasonality
Window installers are busiest in the spring and fall, and prices tend to rise in response to increased demand. Schedule your project for winter or summer—the industry’s off-season—and you’re more likely to snag a discount.
New vs. Existing Frame
If you already have double-pane frames in good condition and only need the glass replaced, you'll save 50% on installation costs. However, the window panes must be the same thickness, and the frame must be in good enough condition to reseal. For example, if you're upgrading from single-pane windows to double-pane or switching to a different type or thickness of glass, you'll also need to replace the frame.
Extras and Upgrades
Many upgrades, extras, and additions can increase the price of your window replacement project, but they can also create a higher-quality finish that meets your design needs. As well as necessary upgrades, you need to consider the nice-to-haves, including:
Window repair costs: $150–$600 per window
Window cleaning costs: $100–$450 per window
Screen replacement costs: $100–$500 per window
Installing window treatments costs: $40–$4,800 per window
Installing storm windows: $100–$300 per window
Window security film: $20–$600 per window
Low-emissivity (low-E) coatings: $300–$1,000 per window
Window tinting costs: $150–$1,600 per window
Budgeting for Double-Pane Windows
When budgeting for double-pane windows, keep these tips in mind:
Get multiple quotes from reputable window installers to compare prices and services—aim for at least three estimates to ensure competitive pricing.
Consider scheduling your installation during winter or summer when demand is lower, potentially saving 10-15% on your total project cost.
Prioritize energy efficiency over aesthetics where possible—the long-term utility savings from quality windows often outweigh the higher upfront costs.
Set aside an additional 10 to 15% of your budget for unexpected issues, such as frame damage or necessary structural repairs that may only become apparent during installation.
Check for available tax credits, rebates, or incentives for energy-efficient window installations that could offset your initial investment.
DIY vs. Hiring a Window Installation Pro
Installing double-pane windows yourself can reduce the installation fee, but only if you already have the necessary tools and experience. Incorrectly installed windows can void warranties and lead to costly leaks, so in most cases, it makes sense to hire a local window installer.
Replacing windows—even if you're keeping the frames—is challenging and requires a high level of skill, and any savings are likely minimal. Plus, the cost of retail-priced windows and the necessary tools can offset any labor savings.
Using a professional window company to install your windows means they have their own specialist equipment. Additionally, they can access trade-only pricing, offering a significantly better price on the windows and frames. If you want to save money on window installation, shop around or wait until the off-season (summer or winter), when you'll likely have access to better deals.
Hire a professional today for reliable and safe window installation.
How HomeAdvisor Gets Its Cost Data
No place is more important than your home, which is why HomeAdvisor connects homeowners with local pros to transform their houses into homes they love. To help homeowners prepare for their next project, HomeAdvisor provides readers with accurate cost data and follows strict editorial guidelines. After a project is complete, we survey real customers about the costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects.
Frequently Asked Questions
You can repair the seals on double-glazed windows. Repairing the window seals is a delicate process that requires professional expertise. A trained glazier will remove a pane, clean the unit thoroughly, recharge it with the appropriate gas, and reinstall the seal to restore full efficiency. This method preserves window performance and is more cost-effective than a complete window replacement.
To clear minor condensation from double-glazed windows, apply gentle heat. A standard hair dryer on a moderate setting speeds evaporation—just hold it about six inches from the glass and move the warm air evenly across the pane. This quick fix removes light moisture and helps prevent future buildup, but call a professional if fogging persists or you suspect seal damage.
No, you cannot replace just one pane in a dual-pane window. Replacing only one pane compromises the sealed system and disrupts the thermal barrier, which lowers both insulation and soundproofing capabilities. For optimal performance and energy efficiency, both panes must be replaced to restore the window's full integrity and ensure proper performance.
A broken seal on a dual-paned window is identifiable through several key signs. Visible condensation or a persistent fog between the panes is the first indicator. In addition, noticeable drafts, fluctuating indoor temperatures, and difficulty operating the windows signal that the seal is compromised. These symptoms require a professional evaluation to restore the window’s full performance.
Double-pane windows are significantly more efficient than single-pane windows. They deliver a 24% boost in efficiency during winter and an 18% increase in summer, which reduces external noise and maintains a stable indoor temperature. This improved efficiency leads to lower utility costs and enhanced comfort, and complete window replacement is required to achieve these benefits fully.
Double-pane windows offer exceptional benefits that enhance home comfort and efficiency. They deliver superior insulation and noise reduction by using two sealed glass layers with an inert gas fill, which also boosts security and durability. As a result, your home maintains a consistent indoor temperature, leading to lower energy bills and increased overall comfort throughout the year.
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