R5 Window Program

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:

– R-5 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 R-5 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!

*some locations may not yet have access to these products.