Windows are one of the most frequently renovated and replaced areas of the home. With energy costs on the rise, many homeowners look to replacement windows as a way to help keep heating and cooling costs down, and those in older homes may be looking at traditional-style windows, such as the single- and double-hung varieties.

There are a lot of factors that go into choosing a new window, from the style to how easy it is to clean. It’s important to get the right fit for your home based on your particular needs.

A single-hung window is one of the oldest and most popular varieties. The term single-hung refers to the fact that the window has a single sash, or operational panel. A double-hung window is similar in looks to a single-hung, but includes two sashes or operational panels, which can give more versatility.

In the sections below, we’ll cover the biggest differences between them, so you can make a better informed decision.

Costs

On the whole, double-hung windows cost more than single-hung when comparing similar sizes, window frame construction, and energy efficiency. In most cases, double-hung windows cost about 75% more than single-hung windows. Average costs for single-hung windows range from $100 to $300 per window, while comparable double-hung windows may range from $400 to $600.

Installation costs are also less for the single-hung window, around $75 to $100 per installation, while double-hung windows cost around $150 - $250 per installation.

Because double-hung windows are available with more options than single-hung windows, this can also drive the costs higher. Other factors affecting the cost include the size of the window, energy efficiency, UV protection, and the material the window frame is made of.

Energy Efficiency

Any time you have moving parts on a window, you have the possibility for a poor air seal. A poor air seal is responsible for up to 40% of the energy you use to heat and cool your home. This is why most people upgrade their windows – to get energy savings. Double-hung windows may not always seal properly at the top edge, which may contribute to higher energy costs than single-hung windows. However, good-quality, energy-efficient windows can be found in both single- and double-hung varieties, but you may have to pay more for the better quality double-hung window. Most double-hung windows cost up to 75% more than single hung.

Style

Both single- and double-hung windows come in a wide range of styles, frames, and designs. Both can be found in aluminum, vinyl  ¹, fiberglass  ², and wood frames. Some manufacturers offer more styles for double-hung windows as well as more options for window frame materials and trim.

Safety

Both windows are secure when properly installed and maintained. Some double-hung windows may be less secure if not shut properly, as gravity can work on the upper sash, pulling it down slightly in the frame so that it doesn’t lock properly. This can be remedied by always testing the window after locking it to ensure that it is done correctly.

Remodeling Terms Cheat Sheet

¹ Vinyl: A synthetic plastic made from ethylene and chlorine. Vinyl has many applications in the construction industry and it is widely used in sidings, window frames, roofing and gutters, among others

² Fiberglass: Plastic that is reinforced with glass fibers. The fibers may be mixed randomly throughout the plastic, or come in the form of a flat sheet, or be woven into a fabric