Both styles are common in Chicago homes, but they open differently, seal differently, and suit different rooms. Here is how they compare, so you can pick the right one for each opening instead of guessing.
A double-hung window has two sashes that slide up and down within the frame. You can open the top, the bottom, or both partway. A casement window is hinged on one side and swings outward like a small door, opened with a crank or a lever.
Double-hung windows let you choose how much air comes in and from where, which is handy for keeping air moving through a room. Casement windows open fully, top to bottom, and because the sash swings out, they can scoop a passing breeze and direct it into the house. On a still day, a casement catches more air; on a breezy day, a double-hung gives you more control.
When a casement closes, the sash presses against the frame and compresses the weatherstripping, which makes a very tight seal. Double-hung windows slide, so they rely on weatherstripping along channels that has to seal while still allowing movement. Modern double-hung windows seal well, but the sliding design has more places where air can work through, especially after years of use.
In a Chicago winter, that matters. Wind-driven cold finds any weak spot in a window. If a specific opening faces the prevailing wind, a casement's compression seal is a genuine advantage. For less exposed walls, a quality double-hung performs well and gives you the operating style most people are used to.
Double-hung windows are the traditional look on Chicago's vintage housing stock. Chicago bungalows, brick two-flats, and older single-family homes were almost all built with double-hung windows, and keeping that look matters on a street of century-old homes. Casement windows show up more in mid-century and newer construction, and in pairs flanking a picture window.
If you own a classic bungalow and want replacement windows that look original from the curb, double-hung is usually the natural choice. If your home has modern styling, or you are replacing a wide opening with a fixed center window, casements on the sides work well.
Casement windows are a good fit over kitchen counters, where reaching up to slide a sash is awkward — a crank is easier. They also suit openings where you want the entire window to open. Double-hung windows suit bedrooms and living rooms, where tilt-in sashes make cleaning the outside glass straightforward from inside, and where matching the home's original look counts.
Double-hung windows have more moving weatherstripping and balance hardware to keep in shape; the tilt-in feature makes glass cleaning easier. Casement windows have fewer sliding parts, but the crank mechanism and hinges need occasional cleaning and lubrication, and the sash projects outward, so you will clean that glass from outside. Our maintenance guide covers the seasonal care for both styles.
Because casement windows have more complex hardware, they generally run somewhat more per window than a comparable double-hung. The honest answer on total cost depends on sizes, glass options, and how many windows are involved. For what goes into a quote, see window replacement cost in Chicago.
Choose double-hung to match a vintage Chicago home, for rooms where you want flexible airflow, and for easy cleaning. Choose casement for the tightest seal against winter wind, for openings over counters, and for spots where you want the whole window open. Many homes end up with a mix, and that is perfectly normal.
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