Aluminum casement windows typically cost $800-$1,800 per window installed, with an average near $1,200 for a standard replacement. Size, glass package, frame finish, installation conditions, and local labor rates can move the quote substantially.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Window unit | $400 | $750 | $1,300 | Standard residential casement |
| Installed replacement | $800 | $1,200 | $1,800 | Existing opening, standard access |
| Custom or large unit | $1,000 | $1,800 | $3,000+ | Oversized, specialty glass, or structural work |
| Installed price per sq. ft. | $35 | $60 | $100+ | Varies with size and installation scope |
Aluminum Casement Window Prices by Size and Grade
A standard aluminum casement unit around 24 by 36 inches generally costs $400-$900 before installation. Larger units, such as 36 by 60 inches, often run $700-$1,500, while custom configurations can exceed $2,000 for the window alone. Installed pricing commonly lands between $800 and $1,800 per opening.
For a typical replacement with standard double-pane glass, budgeting about $1,200 per window is a reasonable starting point. Premium thermal breaks, upgraded finishes, laminated glass, and unusual dimensions raise the material price. Assumptions: U.S. residential project, standard color, normal access, and no major framing repairs.
What Goes Into an Aluminum Casement Quote
Quotes may separate the window, removal, installation labor, sealing, and disposal, or combine them into one installed figure. Comparing the same scope matters: a low unit-only quote is not directly comparable with a full replacement estimate.
| Quote component | Typical range | What it covers | Pricing basis |
|---|---|---|---|
| Window and glass | $400-$1,300 | Frame, sash, hardware, standard glazing | Per unit |
| Installation labor | $250-$650 | Set, fasten, shim, and seal | Per opening |
| Removal and disposal | $50-$200 | Old unit removal and haul-away | Per window |
| Trim and insulation | $50-$300 | Interior or exterior finish work | Per opening |
| Permits or inspection | $0-$250 | Local requirements, if applicable | Per project |
Labor is often about 20%-40% of a straightforward replacement quote. A crew may charge roughly $75-$125 per worker-hour, though contractors typically price the complete opening rather than bill homeowners by the hour.
How Frame Size, Glass, and Opening Affect the Price
Window area is a major cost driver, but price does not rise in a perfectly linear way because hardware, fabrication, and setup also contribute. Moving from a unit under 8 square feet to one over 15 square feet can add $300-$900 or more, particularly when stronger glass or reinforced framing is needed.
Double-pane low-E glass generally costs more than basic clear glazing, while triple-pane or laminated glass can add roughly $150-$500 per unit. A rough opening that needs repair, is out of square, or has water damage may add $200-$800 in carpentry. Changing the opening size can cost substantially more because siding, drywall, or structural framing may need modification.
Ask whether the quote includes both glass performance and repairs to the rough opening. Coastal projects may also need corrosion-resistant hardware or finishes, which can add about 5%-15% to the window price.
Can Repairing the Crank Cost Less Than Replacement?
A casement that will not open may need a replacement crank, hinge, lock, or operator rather than a new window. Common hardware repairs cost about $100-$350, including a service visit; replacing a sash can run $250-$700 depending on parts availability and labor.
Repair is often the lower-cost choice when the frame is sound and compatible parts are available. Replacement becomes more practical when the aluminum frame is bent, the glass is fogged between panes, corrosion has weakened the unit, or several components have failed. For older or discontinued models, labor and hard-to-source parts can narrow the price difference.
How Installation Hours Change the Total
A standard insert replacement often takes about 2-4 hours per opening for a two-person crew when the existing frame is usable. A full-frame replacement may take 4-8 hours per window because installers remove more material, inspect the opening, and rebuild flashing or trim. Several windows installed together can reduce the average labor charge per unit.
One difficult opening can add more to the estimate than a modest upgrade in glass. Second-story access, interior protection, masonry, damaged framing, and limited space for staging can raise labor by $100-$500 per window. Request an itemized note for repairs that cannot be confirmed until removal.
Why Coastal and High-Cost Metro Quotes Run Higher
Labor and transportation can change pricing even when the window specification stays the same. Quotes in high-cost metropolitan areas may be about 15%-30% above a typical national estimate, while rural areas can be 5%-15% lower if access and delivery are straightforward. Remote locations may instead pay more for freight or limited contractor availability.
Compare local, like-for-like estimates rather than assuming a national average applies to every ZIP code. In coastal regions, salt exposure may justify upgraded hardware; in colder climates, higher-performance glass can add cost but may be important for comfort and energy performance.
Which Extras Add $50-$800 to a Window Project
Removing and hauling an old window usually adds $50-$200 per unit if it is not included. New interior casing or exterior trim can add $50-$300, and repairing rot or water damage may add $200-$800 depending on the affected area. Delivery charges may be $50-$200 for small orders, while rush fabrication or special colors can raise the unit price by 10%-25%.
Confirm whether disposal, finish work, flashing, and sales tax are included before comparing totals. Permit fees vary by city, and a replacement that changes window dimensions may trigger additional inspection or code requirements. Obtain local confirmation when altering an opening.
Where Can Buyers Trim Aluminum Casement Costs?
Keeping the existing opening size avoids much of the added labor and finish work associated with structural changes. Standard dimensions and colors are usually less expensive than custom sizes or specialty coatings, and scheduling several windows in one visit may reduce setup charges. Homeowners can clear the work area and move furnishings, but should leave removal and installation to qualified installers when water sealing or safety glazing is involved.
Compare at least three written quotes with matching size, glass, hardware, removal, and warranty details. Avoid paying for premium glass or accessories without a clear need, but do not select a lower bid that excludes flashing or opening repairs. A written allowance for concealed damage can make competing estimates easier to evaluate.