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New and Replacement Single-Hung Windows
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Replacement Single-Hung Windows and New Single-Hung Windows

Single-Hung Window The most common type of window in American homes is the single-hung window because of its timeless beauty and straightforward construction. Due to their widespread use in homes before to the development of double-hung windows, single-hung windows are the most traditional type of residential window. Although double-hung windows are now an option for homeowners, single-hung windows are still a viable choice for many different types of homes. When a window only opens from the bottom up, it is single hung.

Single-hung Window Shape and Function

Single and double-hung windows might be hard to tell apart unless you see them in action. Their shapes are remarkably similar. Only the lower sash of single-hung windows can be moved; the upper sash cannot be moved. The lower sash of the window is supported as it opens by springs on either side of the window frame, so when you let go, it stays open. The window sash's opening can be quickly and easily changed. When a window is opened, a screen is typically behind the lower sash to keep out insects.

Air Flow and Cleaning

Fiberglass Single-Hung Window from Pella Single-hung windows typically exhibit fewer air leaks and boast a snugger fit within their frames. Their straightforward design contributes to a more cost-effective window unit. Single-hung windows are often the preferred choice for historic homes aiming to preserve their authenticity. In cases where the upper sash breaks, professional assistance from a glass company, such as LR Glass & Window, is required for repair, as the upper sash cannot be removed. However, homeowners should be aware that having only one movable sash limits ventilation options. Cleaning a single-hung window on the top floor from the outside can also pose challenges.

One thing to keep in mind is that with some manufactures, you have the option to have the lower sash be tiltable, meaning that it can tilt inward for easy cleaning of the outside of the window sash. This is generally not a good use of money as if you are wanting that feature, getting a double hung with two tilting sashes is far more practical and money well spent for actual convenence.

Ventilation and Energy Efficiency:

Fiberglass Single-Hung Window from Pella While single-hung windows offer limited ventilation compared to double-hung or casement windows, they still provide an effective means of allowing fresh air into a room. The lower sash can be opened to regulate airflow, making single-hung windows a suitable choice for bedrooms, living rooms, and other living spaces. Additionally, advancements in window technology and weatherstripping contribute to increased energy efficiency, helping homeowners save on heating and cooling costs.

Maintenance and Ease of Use

One notable advantage of single-hung windows is their ease of maintenance. With only the bottom sash being operable, cleaning the exterior of the window is more straightforward compared to double-hung windows. This feature makes single-hung windows a practical choice for homeowners seeking a low-maintenance window solution without compromising on style or functionality.

Modern Innovations and Design Options

Contemporary single-hung windows have evolved to meet the demands of modern architecture and design preferences. Homeowners can now choose from a variety of materials, including vinyl, wood, and aluminum, each offering its own set of benefits. Additionally, single-hung windows come in a range of styles, allowing for customization to complement the overall aesthetic of a home.


Single-hung windows, with their timeless design and practical functionality, continue to be a staple in residential architecture. Whether chosen for their historical charm or their space-efficient operation, these windows bring a touch of elegance and simplicity to homes. As technology advances and design options expand, single-hung windows remain a reliable and versatile choice for homeowners seeking a classic yet functional window solution for their living spaces.

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Different Types of Windows