Casement vs. Double-Hung Windows: Which Is Right for Your Home?
Jul 27, 2026Short answer: choose a casement window when you want the tightest seal, the widest airflow, and an unobstructed view, and choose a double-hung window when you want a classic look, easy cleaning, and a style that plays nicely with window air conditioners and patios. Both are excellent replacement windows. The right pick depends on the room, the way the window faces, and the look you are after. Here is how they actually compare for a Chicagoland home.
The quick difference
A casement window is hinged on the side and cranks outward like a door. Turn the handle and the whole sash swings open.
A double-hung window has two sashes that slide up and down in a single frame. You can open the bottom, the top, or both, and both sashes usually tilt inward for cleaning.
That one structural difference drives everything else: how tightly they seal, how much air they move, how you clean them, and where each one belongs.
Side-by-side comparison
| Factor | Casement | Double-Hung |
|---|---|---|
| How it opens | Cranks outward on a side hinge | Two sashes slide vertically |
| Air seal | Very tight (compresses into the frame) | Good (sashes slide past each other) |
| Ventilation | The full opening opens; catches side breezes | Up to half the opening at once; top-and-bottom airflow |
| View | Unobstructed, no center rail | Split by a center check rail |
| Cleaning | Reach the outside from inside on most units | Sashes tilt in for easy cleaning |
| Window AC units | Not suited to standard units | Works with standard units |
| Near patios and walkways | Sash swings out into the space | Stays flush, nothing projects |
| Classic or historic look | More contemporary | Traditional, period-friendly |
| Typical relative cost | Usually a bit higher for the same size | Often the more budget-friendly of the two |
Where casement windows win
Casement windows seal by compression, which means the sash presses flat into the frame when you crank it shut. That makes them one of the most airtight styles you can buy, and it is a real advantage heading into a Chicago winter. They also open fully, so they catch side breezes and move more air than a double-hung of the same size, and because there is no rail across the middle, the view stays clean.
They are the easy choice for hard-to-reach spots. A crank handle over a kitchen sink beats reaching across to push up a heavy sash. Casements suit contemporary homes, wide unobstructed views, and any room where ventilation and efficiency matter most. If you like the crank-out design but have a short, wide opening, an awning window is the close cousin worth a look.
The trade-offs: a casement swings outward, so it is a poor fit next to a walkway, deck, or patio where the open sash would be in the way, and it does not work with a standard window air conditioner. The crank hardware is one more moving part, though quality operators hold up well.
Where double-hung windows win
Double-hung windows are the familiar, traditional look you see on so many Northshore homes, and they match historic and classic architecture in places like Winnetka, Highland Park, and Evanston without a fight. Both sashes open, so you can vent from the top, the bottom, or both, and the tilt-in sashes make cleaning the outside glass simple from inside, which matters on a second story.
They also stay flush with the wall, so they are the sensible choice next to patios and walkways, and they accept a standard window air conditioner if you still use one. For many homeowners they are the more budget-friendly option at the same size.
The trade-offs: because the sashes slide past each other, a double-hung is not quite as airtight as a casement, and only half the opening ventilates at a time. The center rail also splits the view. With a modern build and a good glass package, though, a double-hung is still a comfortable, efficient window.
Which should you choose, room by room
- Over the kitchen sink: casement, for the easy crank and full airflow.
- Bedrooms and living rooms in a traditional home: double-hung, to match the architecture and keep cleaning simple.
- Facing a patio, deck, or walkway: double-hung, so nothing swings into the space.
- Rooms where efficiency and a clean view matter most: casement.
- A room you still cool with a window AC unit: double-hung.
Many homes end up with both, casements where airflow and views lead and double-hungs where tradition and window ACs lead. There is no rule that says a house has to pick one.
What about cost and efficiency?
Casement windows usually run a little higher than a double-hung of the same size because of the crank hardware, but the gap is modest and depends far more on the frame material and glass package you choose than on the style itself. Both styles are available with energy-efficient, low-E, multi-pane glass, so both can perform well in Chicagoland’s climate. We do not post fixed prices, since an honest number depends on your actual openings; for the broader picture, see our guide to what replacement windows cost in Illinois and our energy-efficient windows page.
The bigger driver of comfort is not the style at all. It is the install. An average window installed well outlasts a great window installed poorly, so a casement or a double-hung only delivers its rated seal when it is set square, shimmed, and air-sealed correctly. That is the part we treat as the job.
Get a straight recommendation for your home
You do not have to settle this from a chart. On a free in-home visit, a McCann design consultant looks at each opening, how it faces, and how you use the room, then recommends the style that actually fits, casement, double-hung, or a mix. You get one or two written proposals with the price shown against exactly what you are getting, and no pressure to decide on the spot. Start with our replacement windows overview or book a free consultation.
Frequently asked questions
Are casement windows more energy-efficient than double-hung windows?
Generally yes, by a small margin, because a casement compresses tightly into the frame when closed while a double-hung’s sashes slide past each other. Both are available with energy-efficient glass and perform well in Chicagoland when installed correctly, so the frame material, glass package, and install quality matter more than the style alone.
Which is easier to clean, casement or double-hung?
Both are easy in different ways. A double-hung’s sashes tilt inward so you can clean the outside glass from inside, which is handy upstairs. Most casements let you reach the outer glass through the open sash from inside as well. Neither requires you to go outside.
Do casement windows work near a patio or deck?
Not ideally. A casement swings outward, so next to a patio, deck, or walkway the open sash gets in the way. A double-hung stays flush with the wall and is the better choice in those spots.
Can I use a window air conditioner with a casement window?
Not with a standard unit, because casements do not have the flat vertical opening a window AC needs. If you still cool a room with a window unit, a double-hung is the practical choice, or you can look at other cooling options.
Which style is better for a historic Northshore home?
Double-hung windows usually match traditional and historic architecture more naturally, since they carry the classic two-sash look. That said, wood-clad casements can suit certain historic homes too. We match the style to the home’s era and trim on the consultation.
Ready to move forward?
Ready to improve your home’s comfort and efficiency? Call McCann Window & Exteriors at (847) 562-1212 or visit McCannWindow.com to schedule your free consultation today.
