What is the Difference Between Double-Hung and Single Hung Windows?

By Window Works September 4, 2025

When planning a window replacement, choosing the right style can feel overwhelming. The type of window you select not only impacts the look of your home but also affects the functionality of your property. The right window will ultimately suit your budget, your lifestyle needs, and your design preferences. At WindowWorks, our Chicago window replacement experts often guide homeowners through one of the most common decisions: double hung vs single hung windows.

Both are classic, vertical sliding window styles that enhance curb appeal, but each offers unique benefits. Understanding what are double hung windows and what are single hung windows can help you make the right choice for your home and lifestyle.

How Double Hung and Single Hung Windows Are Similar

At first glance, double hung vs single hung windows look almost identical. Both styles feature two sashes, which are the framed panels of glass that slide vertically in a window frame. These sashes create the classic, balanced appearance that makes them a favorite in homes.

Their shared design gives both options several benefits. Each allows for vertical opening, which saves space compared to windows that swing outward. This makes them perfect for areas where outside space may be limited, such as walkways or porches. In terms of curb appeal, both styles deliver a timeless look that fits in with a variety of house designs.

Additionally, whether you choose single hung or double hung windows, both can be customized with features like grid patterns, energy-efficient glass, and different frame materials to match your home’s overall aesthetic and performance needs.

How Double Hung and Single Hung Windows Are Different

Although they look alike, the main difference between double hung vs single hung windows is in how they function. In single hung windows, only the bottom sash moves up and down, while the top sash remains fixed in place. This simpler design reduces the number of moving parts, which can make single hung windows slightly more durable over time.

Meanwhile, in double hung windows, both the top and bottom sashes move, giving you more flexibility. You can open one sash at a time or both together, depending on your ventilation needs.

The ability to open both sashes makes double hung windows a popular choice for comfort and energy efficiency. Warm air naturally rises, so opening the top sash lets it escape while cooler air enters through the bottom. This circulation effect helps keep your home feeling cooler during warmer months.

In contrast, the simplicity of single hung windows means fewer moving parts to maintain. While you lose some of the airflow control that double hung windows provide, the straightforward operation and simpler design can be appealing for some homeowners.

Benefits of Double-Hung vs Single-Hung Windows

Double hung windows are one of the most common choices for homeowners because of their versatility and ease of use. Beyond their classic style, they offer practical advantages that make daily life easier, including:

  • Easy cleaning: Thanks to tilt-in sashes, you can clean both the interior and exterior glass from inside your home. This is especially helpful for multi-story houses where exterior access can be difficult.
  • Improved airflow control: Double hung windows allow you to open both sashes halfway to create a natural circulation system. This helps let out warm air through the top while pulling cooler air in from below.
  • Safety and flexibility: For families with children or pets, you can keep the lower sash closed and open only the top sash of double-hung windows, letting in fresh air without compromising safety.
  • Resale value: Because of their convenience and extra functionality, double hung windows are often considered a worthwhile upgrade, potentially increasing your home’s value to future buyers.

Benefits of Single Hung Windows

While they don’t offer the same level of functionality as double hung window designs, single hung windows are still a strong option for many homeowners. Their appeal comes from their affordability and simplicity:

  • Lower cost: Single hung windows are generally 10–20% less expensive than double hung windows. For large projects or whole-house window replacements, this can result in significant savings.
  • Simple, durable design: With only one movable sash, there are less components that can wear out over time. This makes single hung windows a reliable and low-maintenance option.
  • Classic appearance: Despite their simpler function, single hung windows look nearly the same as double hung windows from the outside. Homeowners can enjoy the same timeless curb appeal at a lower price point.
  • Energy efficiency: With one fixed sash, there’s less potential for air leakage compared to two movable sashes, which can contribute to improved energy efficiency.

Decision Time: Double Hung vs Single Hung Windows

Now that you know the advantages of double hung vs single hung windows, the decision comes down to your priorities. Understanding what are double hung windows and what are single hung windows, you can now consider cost, appearance, maintenance, and overall convenience. Many homeowners choose double hung windows for their versatility, while others prefer single hung windows for their affordability.

If you’re looking for a reliable Chicago window replacement company that offers both styles, contact WindowWorks. With more than 50 years of industry experience, our team provides durable, stylish, and energy-efficient windows backed by professional installation.

As an A+ Better Business Bureau (BBB)-rated company, we take pride in guiding homeowners through every step of the process. Ready to learn more? Call us today or request a free, no-obligation in-home estimate through our online form.

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