The Difference Between Double Hung and Single Hung Windows

The Difference Between Double Hung and Single Hung Windows

When it comes to replacement windows, both double hung and single hung windows are popular options. From a distance, they look similar. However, these windows do have some big differences that separate them. Most homeowners prefer one over the other. But which is the right choice for you? Here are some key differences between double hung and single hung windows:


The most obvious difference between double hung and single hung windows is the operation. Double hung windows have two fully operable sashes. The bottom sash moves upward while the top sash moves downward. This allows for variation in the way you ventilate your home. You can open the top sash, bottom sash, or slide both about half open. Single hung windows, however, only have one operable sash. You can still have the window half-open, but you will be more limited in your ventilation options.


Because double hung windows have two operable sashes, they have a double locking system. You can lock one or both window sashes. This reinforces the security of your window, so that the window is more difficult to break into. Single hung windows only have one sash that needs to be locked, so the locking system is simpler to operate. However, it is also easier to break into, making double hung windows a more secure choice.

Energy Efficiency

Double hung windows are some of the most energy efficient windows on the market. Their heftier frames protect your home from air leakage while helping to seal heat inside your home. On warmer days, opening your window allows you to circulate fresh air into your home, without cranking your air conditioning. Single hung windows allow for some ventilation, but it’s not quite up to the standard of double hung windows.

Are you interested in having single or double hung windows installed in your home? Contact Jancewicz & Son todayfor more information or a free estimate.

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