Windows 101 | Single Hung and Double Hung

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Your windows can enhance your home’s appearance, increase its value, and help you save money with better energy efficiency. Whether you’re going with new construction windows or replacement windows for your home, you’ll need to choose between single-hung or double-hung windows. Find out more about these window options, so you can make the best decision for your home.

Single Hung Windows

Single-hung windows have a top sash that is Fixed (does not move) and a bottom sash that Operates (slides up and down) and can be tilted in for easy cleaning. The sash is the part of the window that holds the glass pane or panes in place. This type of window offers important benefits for homeowners, including the following:

  • Cost-effective: You can get these windows at the best possible price, which helps you save money that you can use elsewhere. Spending less on these windows also means you’ll have money to upgrade them if desired.
  • Energy-efficient: Single-hung windows, including tilt-in sash windows and those with one movable sash, help you save money on your energy bills while also helping your home feel more comfortable by reducing drafts and preventing less heated or cooled air from escaping.
  • Fixed Top Sash and Operating Bottom Sash: Both window options offer greater safety if they’re installed above the first floor, as well as a lower risk of repairs due to having fewer moving parts. Again, this configuration makes it easier to clean the outside of the glass.

Double Hung Windows

Double-hung windows have a top and bottom sash that you can either open and close or slide up and down. These windows provide the following advantages for homeowners:

  • Improved ventilation: You’re able to control airflow better with these windows, which helps improve your indoor air quality and keep your home cooler. You can just open one sash for just a bit of ventilation. You can also open the bottom sash to let in fresh, cool air and the top sash to let warm, indoor air escape.
  • Energy-efficient: You can save money on your energy bills and maintain a more comfortable home or room interior.
  • Easy maintenance: Double-hung windows with tilt-out sashes make it easy to clean the interior and exterior glass from inside your home.

Replacement Windows

Replacement windows, or retrofit windows, refer to windows that replace your current windows. These are typically installed during home renovations or as window replacement projects. You can use replacement windows with new construction or for standard window replacement. Depending on the complexity of the job, these windows usually cost less to install, if the contractor does not have to remove the exterior sheathing exposing the frame of the home. 

New Construction Windows

New construction windows are typically used for brand new homes or home additions. These windows have to be installed directly on the framing using a nail-in frame. You can have new construction windows installed during a home renovation, but keep in mind that this process involves removing exterior sheathing and removing the nail fin.


We hope these tips will help you as you consider replacing your home's windows. As always, you can trust our store representatives to assist you with your project with a Free Window Estimate. You will always receive the Guaranteed Lowest Price on the products you need for your project.

About The Author

Amanda D successfully completed the courses required for a BA in both English and Psychology. She enjoyed studying literature, as well as cognitive psychology. Amanda's fascination with language led her to take several classes in linguistics, psycholinguistics and literary techniques. She started working as a freelance writer in 2008. Since then, she has experience writing on topics such as real estate, travel, interior design, home improvement, parenting and pets. Amanda's style is to break down complex topics into information that's easy for everyone to understand.


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