If you’re replacing your windows, you may be uncertain about the factors that relate to its energy efficiency. Although the terms sound similar, the U-value and R-value refer to two very different elements. Both, however, relate to the window’s efficiency properties, so it’s important to understand them to make the most informed choice. Here’s what you should know.

About U-Values

Also referred to as the U-factor, the U-value is a measurement that indicates how much heat is lost or gained through the window. The lower this value, the greater the window resists the flow of heat and, thus, the more efficient it is at insulating the home.

This is advantageous for homeowners who want to reduce their energy costs. The less that heat escapes your home during winter, the less you’ll need to rely on your heating system to warm the home. And when heat gain is minimal, you won’t need to use your air conditioner as much during summertime. Both can help reduce your bills and improve your overall comfort.  

About R-Values

By contrast, R-value refers to the window’s resistance to heat conduction. This insulating value is important in helping homeowners select replacement windows that are as energy efficient as possible. The greater this value, the better equipped it is to lock in heat during winter and out during summer.

While glass is an insulating material, it alone cannot do a sufficient job. That’s why window installation professionals often use low emissivity, or low-E, glass. The double-pane product is coated with a clear topping that reflects heat without affecting light transmission. The lower the window’s low-E, the greater its R-value. Adding sufficient caulking and substantial insulation around the window can also boost the structure’s efficiency.

Homeowners throughout Bainbridge, NY, who seek quality replacement windows can trust in the team at Madison Vinyl Windows. Since 1993, this trusted company has provided area customers with efficient windows, doors, and siding replacements. Whether you’re in the market for a single replacement or want to redo your entire home, you can trust them to handle the job promptly and professionally. Visit them online for information, or call (607) 967-4323.