R5 Replacement Windows

The United States Department of Energy (US DOE) has successfully launched its “R5” Program for High Performance Windows.

Window Depot USA locations across the country can now bring you these great products!

Here’s a summary of the program:

– R5 windows are highly insulating windows with a whole-window R-value of 5 (a U-factor of around 0.2) and are the top tier of energy efficient windows for cold and mixed climates available today

– Common ENERGY STAR windows only have an R-value of 3. Increasing the R-value from 3 to 5 reduces average heat loss through the windows by 40% and saves consumer money on energy bills.

– The principal barrier to widespread market commercialization of R5 windows is cost. The Department of Energy is working with industry and potential buyers to lower cost and make these energy-efficient products more readily available.

For more information, you can visit the DOE websites at these two addresses:



For a FREE In Home Estimate on these High Performance Windows, just fill out our FREE ESTIMATE FORM Today!

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