Double-Hung Windows Buyers Guide
What are Double-Hung Windows?
Double-hung windows got their name because both sashes operate independently of each other within the window frame. Unlike single-hung windows that have a fixed sash on top and operable sash on the bottom, double-hung windows can be opened from the top and bottom at the same time. This functionality is excellent for air circulation. Opening the top sash allows rising warm air to escape while cooler air enters through the bottom sash. Double-hung windows also have inherent safety properties. Opening just the top sash creates an opportunity for ventilation while keeping kids and pets safe.



Benefits of Double Hung Window Replacement
Find out why double-hung is the most popular window style for homes.
- Classic, traditional look and feel
- Easy operation with both top and bottom sashes for air circulation
- Suitable for any size window opening
- Tilt-in sashes allow for easy cleaning from inside the house
Improveit’s Performax54 Double-Hung Windows
The country’s most popular window should be equipped with the best components. That’s why our Performax54 windows feature a frame that’s 400x stronger than other replacement double-hung windows, and sashes designed to blog drafts 76% better than the next best window on the market.
Design Options for Double-Hung Windows
Performax54 Windows Are Available In These Colors

Exterior: White
Interior: White

Exterior: Beige
Interior: Beige

Exterior: Brown
Interior: White

Exterior: Clay
Interior: White

Exterior: White
Interior: Wood

Exterior: Beige
Interior: Wood

Exterior: Any
Interior: Any
Window Grid Design Options

No Grid

Colonial Grid

Diamond Grid

Prairie Grid
Double Hung vs Single Hung Windows
What’s the difference between a double-hung and single-hung window? Single-hung windows have a fixed top sash; only the bottom sash opens and closes. This arrangement means single-hung windows don’t offer the benefits of air circulation through both sashes like double-hung windows do. Also, single-hung windows can be more difficult to clean. While the bottom sash may tilt in for easy cleaning from inside the house, the exterior of the top sash will have to be cleaned from outside. This is especially challenging on upper-level windows.
Double Hung vs Casement Windows
What’s the difference between a double-hung and a casement window? Though both double-hung and casement windows are generally tall and rectangular, casement windows swing open on side-mounted hinges, while double-hung sashes move up and down within the frame. The choice between double-hung and casement often comes down to location. Areas that are hard to reach, such as over a kitchen window, may benefit from a casement that opens easily with a crank instead of trying to lift the sash from a distance. However, casements may not be ideal if there’s an obstruction near the window, such as a tree or air conditioning equipment that the casement could swing into. In those cases, double-hungs are your best bed. Sometimes casements and double-hungs pair nicely together. Consider a beautiful window wall with a double-hung in the center and swing-out casements on either side!