Dated windows can compromise the security of your home so it’s natural to replace windows that aren’t functioning as they should. Unfortunately, choosing what windows to replace your existing windows with can be a bit of a challenge because there are so many options, and you may have very little knowledge of windows.

At Window World, we know windows, and we take pride in helping customers determine the best option for their windows. One easy way to streamline the process of choosing home replacement windows is by assessing R-values and U-values.

What Are R-Values and U-Values?

Home windows are rated based on R-values. R-values refer to the amount of thermal energy resistance within the construction industry. In your home, your ceiling, walls, basements, insulation, and windows all have R-values. Homeowners should consider installing windows with higher R-values because these windows have the ability to resist conduction.

U-Values refers to the amount of heat your windows allow through to the inside of your home. Windows with a lower U-value are better at keeping your home comfortable and saving you money on utility costs.

How to Choose Windows Based on R-Values and U-Values

After understanding that R-values and U-values are the inverses of each other, it’s important to understand what windows support your strategy for energy efficiency.

There are many types of windows, and each type has an associated R-value that is important to your decision to purchase your replacement windows. The following are some examples of windows and their associated U-values.

Single glass windows. Aluminum framed single glass windows with thermal break offers the lowest U-value for single glass windows, making them more efficient than the option to get them without the thermal break. These windows have a U-value of 1.07, compared to 1.30 for aluminum windows without a thermal break.

Double glass window (low-e) with argon. The best option for double paned glass with argon is to encase the windows in a wood frame. The resulting U-value is .34, compared to .64 in an aluminum frame.

Quadruple glass with (low-e) with krypton. One of the best options for windows is quadruple panes with krypton. These windows are encased in a wooden frame and offer the lowest level of energy transfer with a value of .22.

Low-e refers to low emittance coatings. Low-e refers to a window’s ability to let in heat from the sun while keeping your home warm.

Wading Through Your Options

After understanding R-values and U-values, it’s easy to see how choosing the best window for your home can easily become daunting. At Window World, we want to make the process easier. After assessing your windows and discussing your budget, we make a recommendation based on your needs. We take into consideration the overall look of your home and your goals for energy-efficiency.

We have years of experience when it comes to providing homeowners with top-quality homes in Minnesota and the surrounding area. If you are interested in replacing your windows with an energy-efficient option, do not hesitate to give us a call.

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