Ply Gem R5 triple pane window, High Performance Windows, Replacement windows, Southern California, WIT Windows and Doors

Ply Gem R-5 Window

The definition of R-5 High Performance Windows

Ply Gem high performance R-5 windows are highly insulating triple pane windows with a whole window R value of 5 (a U-factor of around .2) These products are the top tier of energy efficient windows.

Energy Star windows have a U-factor of around .3. Reducing the U-factor from .3 to .2 with high performance R-5 windows reduces average heat loss through the window by more then 30% and saves the consumers money on energy bills.