Casement Window Replacement Cost: 2026 Pricing by Material & Size

A casement window replacement costs $300 to $1,000 installed in 2026, depending on the frame material, size, and glass options. Casement windows are the second most popular residential window style after double-hung, and they offer some distinct advantages: superior air sealing, full-opening ventilation, and easy operation for hard-to-reach locations.

Casement windows are hinged on one side and swing outward using a crank mechanism. When closed, the sash presses tightly against the frame, creating a compression seal that is inherently tighter than the sliding seal on a double-hung window. This makes casements a strong choice for energy efficiency and for rooms where you want maximum airflow.

This guide covers casement window costs by material, size, and brand, with comparisons to double-hung so you can decide which style makes sense for each room. For a quick estimate, use our window replacement cost calculator.

Casement Window Cost by Frame Material

Vinyl casement windows are the most popular choice, offering good performance at the lowest price point. For detailed vinyl pricing across all window styles, see our vinyl window replacement cost guide.

Fiberglass casements are worth considering if energy efficiency is a priority or if you live in a climate with extreme temperature swings. The frame material's dimensional stability keeps the compression seal tight for decades. Our vinyl vs fiberglass windows comparison breaks down the performance differences.

Casement Window Cost by Size

Casement windows come in a range of standard sizes. Larger casements cost more and may require heavier-duty hardware to support the weight of the sash.

Wide casement windows (over 36" wide) can become heavy and put strain on the hinge hardware. For openings wider than 36", many contractors recommend a pair of casement windows (French casement configuration) rather than a single wide unit. Two narrower sashes are lighter, easier to operate, and less prone to hinge wear.

Casement vs Double-Hung: Cost and Performance

Many homeowners choose between casement and double-hung for the same openings. Here is how they compare.

When to Choose Casement

• Above kitchen counters or sinks -- the crank operator is easy to reach without leaning over the counter
• Hard-to-reach locations -- casements open with a simple crank turn rather than requiring you to push a sash up
• Bedrooms that need egress compliance -- casements provide a larger clear opening relative to frame size
• Energy efficiency priority -- the compression seal provides tighter air sealing than double-hung windows
• Maximum ventilation -- the full-swing opening catches breezes and directs them into the room

When to Choose Double-Hung

• Windows facing walkways, decks, or patios -- the outward swing of a casement can obstruct outdoor areas
• Upper floors -- double-hung tilt-in cleaning is safer and easier than reaching outward-swinging casements from the second story
• Traditional home aesthetics -- double-hung has a more classic appearance that suits colonial, Cape Cod, and traditional architecture
• Budget-sensitive projects -- double-hung windows are slightly cheaper on average and have simpler hardware

For detailed double-hung pricing, see our double-hung window cost guide.

Casement Window Glass Options

Casement windows benefit especially from Low-E coating because their tight seal preserves the energy performance over time. A casement window with Low-E glass and argon fill typically achieves a U-Factor of 0.22-0.28, meeting ENERGY STAR 7.0 requirements in most climate zones.

For more on energy performance and available incentives, see our energy efficient windows cost guide.

Casement Window Brands and Pricing

Material costs only. Add $100-$300 per window for professional installation.

Casement windows generally cost $25-$75 more per unit than comparable double-hung windows from the same manufacturer, due to the more complex hardware (crank mechanism, multi-point locking system, heavy-duty hinges).

The Crank Mechanism: What You Should Know

The crank operator is the most distinctive feature of a casement window and the component most likely to need attention over the window's lifetime.

Types of Crank Operators

• Fold-down crank: The standard. A small handle that folds flat when not in use. Simple and reliable.
• Roto-gear crank: A geared mechanism that provides mechanical advantage for opening larger, heavier sashes. Common on premium brands.
• Concealed operator: Hidden inside the frame for a cleaner look. Found on high-end models.

Maintenance

Crank mechanisms require minimal maintenance but benefit from annual lubrication of the gears and hinges with silicone-based lubricant. A well-maintained crank operator lasts 20-30 years. If a crank fails, replacement hardware costs $50-$150 and can usually be installed as a DIY repair.

Screens

Casement windows use interior screens (placed on the inside of the window) rather than exterior screens. This is because the sash swings outward and would hit an exterior screen. Interior screens are typically retractable or removable, and they allow easy crank access.

Whole House Casement Window Costs

If you are replacing all windows with casements (common in contemporary and modern homes), here is the project-level pricing.

Includes standard professional installation. Projects of 10+ windows typically receive 10-15% volume discounts.

Most homes use a mix of window types rather than all casements. You might use casements in the kitchen and bedrooms, double-hung in hallways and living areas, a picture window in the main living space, and a bay window as a feature. For whole-house project pricing with mixed window types, see our whole house window replacement cost guide.

Installation Considerations

Casement window installation is similar in complexity to double-hung installation for standard sizes. A retrofit replacement takes 30-60 minutes per window, with labor costs of $100-$300 per window.

Key installation points for casements:

• Clearance check: Make sure the sash has room to swing open fully without hitting exterior walls, shutters, or adjacent windows.
• Hinge side: Confirm which side is hinged before ordering. Casements are available in left-hinge and right-hinge configurations.
• Operator testing: Have the installer demonstrate the crank operation and ensure smooth, full-range movement before they leave.
• Screen fit: Verify the interior screen fits properly and is easy to remove for cleaning.

Frequently Asked Questions

Get Your Casement Window Estimate

Casement windows deliver excellent air sealing, full ventilation, and easy operation -- especially for hard-to-reach spots. For a personalized estimate on your casement window project, use our calculator below.