Updated: January 30, 2026
Written by Dan Simms
Nieves is a home remodeling editor at Fixr.com with special interest in landscaping, pest control, painting, installation, and repair projects. She brings her work ethic, creativity, and love for teamwork into everything she does, including working with writers and designers at Fixr.com to develop useful and comprehensive guides for homeowners.
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In most cases, replacing a casement window costs between $400 and $1,200, though prices can range from $200 to $2,400. The final cost depends primarily on window size, frame material, and glass type, along with installation location, brand, and local labor rates.
Casement windows are the most energy-efficient type of window, and they offer unobstructed views of the outdoors and better ventilation than any other style. Replacing your existing casement windows can help reduce heating and cooling costs and boost your home’s curb appeal, which can have a major positive impact on value.
Cost to Replace Casement Windows
Cost to Install a Casement Window by Size
The size of the casement window you install directly impacts both your material and labor costs. Larger windows require more materials, increasing the overall price. For labor, costs can also rise for oversized windows because they often require multiple technicians to install, and in some cases, may even need structural modifications to your home.
Most casement windows fall between 2 and 3 feet wide and 3 to 4 feet tall, although sizes vary by room. Smaller units are common in bathrooms and bedrooms, while living and dining rooms typically feature larger windows for better views. Custom sizes are widely available but cost more than standard options.
The table below reflects average installed costs for standard-size casement windows with vinyl frames and double-pane glass.
Window Size (Inches) | Avg. Window Cost (Installed) |
24x36 | $290 – $480 |
24x48 | $380 – $640 |
24x60 | $480 – $800 |
30x36 | $360 – $600 |
30x48 | $480 – $800 |
30x60 | $600 – $1,000 |
36x36 | $430 – $720 |
36x48 | $575 – $960 |
36x60 | $720 – $1,200 |
Casement Window Replacement Cost Factors
Casement window prices can fall anywhere from $200 up to $2,400, and there are a few key factors that determine where in that price range your total will fall. The type of glass you choose, the frame material, the window size, and the glass treatments you choose are the most crucial cost factors to consider.
Casement Window Installation Cost by Type
There are a few different types of casement windows you can purchase, and the one you need for your home will play a major role in your total costs.
Type of Casement Window | Replacement Cost |
Single-frame | $225 – $550 |
Double-frame | $450 – $950 |
Picture window with casement flankers | $600 – $1,300 |
Egress | $700 – $3,700 |
Single-frame casement window
A single-frame casement window consists of a single window in a wall opening, with the sash hinged on one side. This is the most affordable type of casement window to replace, with a cost between $225 and $550 installed. Their lower cost is due to the need for only a single set of opening hardware and less frame material.
Double-frame casement window
Also known as French casement windows, double-frame casement windows are essentially two windows in one opening, hinged on both sides. The two sashes close inward to meet in the middle. The replacement cost for a double-frame casement window is typically $450 to $950 installed, as they require double the hardware and more frame material.
Picture window with casement flankers
A popular setup is to have two casement windows flanking a larger picture window in the middle. This creates a look similar to a bay window, but sits flat against the wall. It is usually best to replace all three windows at the same time. The installed cost for this type of arrangement is between $600 and $1,300.
Egress casement window
An egress casement window is specifically designed for a basement. The single sash opens into a window well and serves as a point of safe exit. Egress casement windows can be either single-frame or double-frame, but single-frame is the more common style. The cost for this type of window is $700 to $3,700 installed.
Casement Window Installation Prices by Frame Material
Frame material significantly affects both upfront cost and long-term performance. Aluminum and vinyl are budget-friendly options but provide less insulation. Composite and fiberglass frames cost more but offer excellent energy efficiency and durability. Wood frames fall in the middle, combining strong insulation with high-end aesthetics.
Frame Material | Average Cost (Installed) |
Vinyl | $300 – $1,000 |
Aluminum | $475 – $1,100 |
Wood | $600 – $2,000 |
Composite | $650 – $1,800 |
Fiberglass | $700 – $2,000 |
Average Cost of Casement Window Replacement by Type Of Glass
The type of glass you choose for your casement window will impact both the cost and the window's efficiency. Single-pane glass is the least expensive option but offers minimal insulation. Double-pane glass is the most common choice, featuring two panes with an insulating gas layer, which improves energy efficiency and reduces noise. Triple-pane glass is the most expensive and most efficient option, providing superior insulation and noise reduction, making it ideal for extreme climates.
The following table provides a cost breakdown by glass type, though the final price will also be influenced by the frame material.
Glass Type | Average Window Cost |
Single-pane | $200 – $900 |
Double-pane | $250 – $1,100 |
Triple-pane | $500 – $1,500+ |
You can also choose from different glass treatment options, which can increase window performance and help maximize your home’s energy efficiency. Low-E and reflective coatings reduce solar heat gain, while tinting helps control glare in sunny climates. Gas fills between panes also improve insulation, with krypton offering higher performance than standard argon.
Glass Option | Average Cost With Window |
Reflective coating | $230 – $1,000 |
Low-E coating | $250 – $1,300 |
Argon gas fill | $400 – $1,200 |
Krypton gas fill | $530 – $1,700 |
Tinting | $5 – $45/sq.ft. |
Casement Window Installation Labor Cost
Labor typically accounts for 20% to 40% of the total cost, or about $80 to $480 per window. Your labor costs will scale a bit with frame material, with wood and fiberglass frames costing more than aluminum and vinyl due to the weight of the material, but window size has the biggest impact. Larger casement windows will require multiple techs to position and install the window, which can double or triple your labor costs.
Replacing multiple windows at once can reduce labor costs per unit, as fixed expenses like travel, setup, and disposal are spread across the project.
Additional Cost Factors for Casement Windows
Material options and labor are the most important cost factors to consider to get an accurate estimate for your casement window installation, but there are some other minor things that can affect pricing that you should factor in.
Window brand: Budget brands like Jeld-Wen, Window World, and Milgard cost less than premium brands such as Andersen, Marvin, and Pella.
Energy efficiency: Higher-performance glass and frames raise upfront costs but can lower utility bills and qualify for rebates.
Geographic location: Labor costs usually scale with the local cost of living. Expect to pay more in major cities than you would in rural areas.
Location in your home: Installations for large casement windows on the second floor will come with much higher labor costs due to the need for special equipment and additional labor.
Permits: Permits are often required for new window installations or if you are changing the size of an existing window opening, with costs typically ranging from $50 to $250.
Replacement vs. new installation: Replacing an existing window is less expensive than a new installation, which can add $1,000 to $2,000 to the total cost due to the need for structural changes.
DIY vs. Hiring a Pro
It’s possible to replace a casement window yourself if you stick with the same window size and dimensions, and it might save you between $80 and $480 per window, on average. However, professional installation is strongly recommended, as improper installation can lead to leaks, drafts, mold, and long-term damage that outweighs initial savings.
Professional installers also provide labor warranties, and many manufacturers require professional installation to maintain product warranties. Overall, it’s worth hiring an expert to get the job done properly and get the most protection from your new casement window.
Ways to Save on Casement Window Installation
Casement window installation can get expensive, but there are some things you can do to save upfront on materials and labor, as well as over time on heating and cooling bills, repairs, and potential damages.
Choose your frame material carefully: Choose vinyl or aluminum frames for lower upfront costs, or fiberglass and composite for long-term energy savings.
Consider your climate when choosing glass options: Match your glass options to your climate to avoid overpaying for unnecessary upgrades.
Keep your window the same size for replacements: Avoid changing the dimensions of your window opening to save on permit and labor costs.
Go with standard sizes if you’re adding a window: If you’re adding a new window, choose a standard casement window size to avoid having to pay extra for custom windows.
Get multiple quotes: Get at least three estimates and have each pro price out the same frame material, glass options, and brand. Compare the quotes to find the best value and avoid unnecessarily high labor costs.
Take advantage of rebates and incentives: Choosing energy-efficient frame and glass materials could make you eligible for rebates, tax credits, and other incentives, especially if you choose an ENERGY STAR-certified window. Check the Database of State Incentives for Renewables and Efficiency (DSIRE) to see if there are perks available in your area.
FAQs
Yes, casement windows tend to be more expensive than other types because they have more complex hardware. On average, you can expect to pay a few hundred dollars less per window if you choose single-hung, double-hung, picture, or awning windows. Bay windows and bow windows will almost always be more expensive than casement windows.
Casement windows are worth it because they’re the most energy-efficient type of operable window, they provide unobstructed views of the outdoors, they let in the maximum amount of sunlight, and they offer the most ventilation.
In most cases, a professional can replace a casement window in 30 minutes to an hour, but your replacement could take up to six hours if you need structural changes to support a different window size or if you’re installing a window where there wasn’t one previously.
Casement windows are the most energy-efficient type of window that remains operable, so unless you go with a fixed picture window, casement windows will keep your home the most comfortable and lead to lower heating and cooling bills.