Can Casement Windows Be Replaced with Double Hung?
At J.C. Tonnotti, we've been helping homeowners with window replacements for over 40 years. As licensed contractors specializing in window installation across Connecticut, we've handled thousands of casement and double hung window projects. Our team has firsthand experience with the challenges and benefits of switching window styles, and we're here to give you straight answers based on real-world knowledge, not sales pitches.
If you’re wondering whether your casement windows can be replaced with double hung windows, the short answer is: yes, they can. But it’s not always a one-size-fits-all job. Let’s break down everything you need to know before you move forward.
Understanding the Differences Between Casement and Double Hung Windows
What Are Casement Windows?
Casement windows are hinged on one side and open outward like a door, using a crank handle. They offer wide, unobstructed views and excellent ventilation.
What Are Double Hung Windows?
Double hung windows have two sashes that slide vertically within the frame. You can open the top, bottom, or both for airflow, and they're often easier to clean from inside your home.
Key Differences in Design and Functionality
Casement windows swing out; double hung windows slide up and down. Casement windows usually seal tighter, while double hung windows provide more flexibility for airflow and are better for certain accessories like window AC units.
Why Homeowners Consider Replacing Casement with Double Hung
Aesthetic Preferences
Some homeowners prefer the look of double hung windows, especially in traditional-style homes. They offer clean lines and a classic appearance.
Ease of Use and Maintenance
Double hung windows are easier to clean, especially upper-story windows, because both sashes can tilt inward. Casement cranks can wear out or stick over time.
Improved Ventilation and Airflow
With double hung windows, you can open both the top and bottom for improved air circulation. Casement windows only open from one edge.
Compatibility with Window AC Units
Double hung windows are better suited for portable window AC units, which don’t typically fit in casement frames.
Is It Possible to Replace Casement Windows with Double Hung?
Structural Considerations
Yes, but it depends on the size and shape of your current casement openings. Sometimes, modifications to the frame or trim are needed.
Frame and Opening Requirements
Double hung windows fit into vertical spaces. If your casement window is wide and short, you may need to resize the opening or install a custom-sized unit.
Custom Sizing and Retrofitting
A skilled installer can often retrofit double hung windows into a casement opening with minimal disruption. Custom window sizes may be required to ensure a proper fit and insulation.
Pros and Cons of Replacing Casement Windows with Double Hung
Advantages of Making the Switch
- Easier cleaning and maintenance
- Better airflow control
- Improved compatibility with AC units
- Timeless aesthetic
Potential Drawbacks to Consider
- May reduce the window’s total opening space
- Could affect energy efficiency if not sealed properly
- Possible structural changes to fit new window type
What to Expect During the Replacement Process
Professional Inspection and Measurement
An installer will evaluate your current window size, frame condition, and opening style to determine what’s possible and whether custom sizing is needed.
Window Removal and Frame Preparation
The old casement window will be carefully removed. Learn more about how to replace a casement window properly. The existing frame may be modified or rebuilt to fit the new double hung window securely.
Installation and Sealing of New Units
Once the opening is prepped, the double hung window is installed, sealed, and insulated to ensure it’s weather-tight and energy-efficient.
Design and Energy Efficiency Considerations
Style Compatibility with Your Home
Double hung windows fit well with colonial, farmhouse, and traditional home styles. If you’re going for a specific look, your installer can help you match trims and finishes.
Energy Performance Comparison
Casement windows tend to seal more tightly, offering slightly better energy efficiency. However, today's high-quality double hung windows also come with insulated frames and double- or triple-pane glass. Learn more about how much new windows save on energy.
Glass and Insulation Options
Look for Low-E glass, argon gas fills, and well-insulated frames to ensure the best thermal performance, regardless of window type.
Cost Factors and Budget Planning
Average Costs of Double Hung Window Installation
Replacing casement windows with double hung typically costs between $400 and $1,200 per window, depending on size, materials, and labor. For more detailed pricing information, see our guide on how much window replacements cost.
Factors That Affect Pricing
- Custom sizing
- Frame or trim modifications
- Window material (vinyl, wood, fiberglass)
- Number of windows being replaced
Long-Term Value and ROI
Double hung windows are durable, low-maintenance, and energy-efficient offering strong long-term value and boosting home resale appeal.
Final Thoughts on Making the Switch
Is It the Right Choice for Your Home?
If you value easy maintenance, flexible airflow, and a more traditional look, switching to double hung windows could be a smart move.
When to Consult a Window Replacement Specialist
Always get a professional evaluation before committing. A licensed window installer will help you determine whether the switch is structurally and financially worth it.
Thinking about replacing your casement windows with double hung?
Contact the window specialists at J.C. Tonnotti for a free, no-pressure consultation. We'll inspect your existing windows and help you explore your best options, based on your home, budget, and preferences.
Frequently asked questions
Can you replace casement windows with double hung without changing the frame?
In some cases, yes, but it depends on your existing opening dimensions. If your casement window opening is relatively square or vertical, a double hung window may fit with minimal modifications. However, wide, horizontal casement openings typically require frame adjustments or custom-sized double hung units to ensure proper fit and insulation.
Will switching from casement to double hung windows affect my home's energy efficiency?
It can, but modern double hung windows are highly energy-efficient when properly installed. While casement windows traditionally seal tighter due to their compression design, today's quality double hung windows feature advanced weatherstripping, Low-E glass, and multi-pane construction that deliver comparable performance. The key is professional installation with proper sealing and insulation.
How long does it take to replace a casement window with a double hung window?
Most single window replacements take 1-2 hours per window when done by experienced professionals. However, if structural modifications are needed—such as resizing the opening or rebuilding the frame—the timeline may extend to 3-4 hours per window. Your installer will provide a more accurate estimate after inspecting your specific situation.
Do I need to replace all my casement windows at once, or can I do them one at a time?
You can absolutely replace windows one at a time or room by room based on your budget and priorities. Many homeowners start with the most problematic windows or the rooms they use most. Just keep in mind that mixing window styles can affect your home's exterior appearance, so plan your replacement strategy with curb appeal in mind.
Are double hung windows harder to operate than casement windows?
Not necessarily—they're just different. Casement windows use a crank mechanism, which can become stiff or break over time. Double hung windows require lifting the sash, but modern versions feature balance systems that make them easy to open and close with minimal effort. Many homeowners actually find double hung windows simpler to operate, especially as they age.
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