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What are double hung windows?
April 10, 2023

Trends come and go. New innovation delivers new window styles, colors and options. Yet the double hung window is still the homeowner’s top pick.

What are double hung windows?


It is called a double hung window because both the top and bottom sashes are operable, move up and down. The ability to open both sashes create increased airflow and ventilation, one of the big reasons this window is so popular. Both sashes of a double hung window can also tilt for easy cleaning. Since the top sash opens, air can circulate between indoor and outdoor spaces. Warm air leaves the house through the opening at the top, and cool air enters through the opening at the bottom.


Comparing Double Hung vs. Single Hung windows


Instead of having two operable sashes, a single hung is a vertical window that has a fixed upper sash and an operable bottom sash. The amount of air ventilation is more limited with a single hung since only air comes through one opening, and it can be challenging to clean the outside of the upper sash on the 2nd or 3rd floor of your home since the single hung doesn’t come with tilt sashes.


Do double-hung windows have full screens?


Double-hung windows have half-screens that cover the bottom sash area and lift up and down. Occasionally, a customer will request full screens; that is, screens that cover the entire window so the top sash can be lowered as well.

Do double-hung windows help with heat?


Double Hung Windows Keep Things Airy & Bright This allows for better airflow when opened at various levels while still providing insulating double panes of glass. This can also vastly improve your heating and cooling costs.

Do you need storm windows with double-hung windows?


The short answer is no. Quality double pane windows will provide all the comfort and security you need. Your windows can be a significant source of heat loss, which means the more you can eliminate drafts and loss of heat through your windows, the more money you'll save.

What is the R-value of a double pane window?


3 to 3.8
Double-pane windows have an R-value ranging from 3 to 3.8, while triple-paned windows have an R-value of up to 7- 8, making them more effective at blocking heat flow. This means that replacing double-paned units with triple-paned windows reduces heating costs.

Why won’t my double hung window open all the way?
The most common issue related to single or double hung windows not opening or closing is the build-up of dust and dirt. As time passes, dirt, dust, and other debris can accumulate on the window frame, resulting in more friction. This is going to make it hard to open and close with ease.


Interested in learning more about EER’s windows? Contact Us

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