R5 triple pane windows & patio doors
R5 insulation rating=U-vlaue .20
R5 is Eco-Friendly Energy Efficiency
Common Energy Star windows and patio doors only have an R rating of 3. This series has a R rating of 5 for the ultimate in energy efficiency.
How Much Difference Does an Energy Efficient Window Make?
Heat and cold transfer throught windows causes approximately 30% of heating and cooling energy costs nationally. That is an annual of 4.31 quadrillion BTU of energy consumption.
R5 = U-Value .20
U-value is the rate of heat flow through a window; the lower the value, the better the insulating quality. Most commonly the U-value is used to measure a window's total insulating value. R-value is the resistance of a material to heat flow; the higher this number, the better the insulating value.
Reduced heat loss in the winter, better than typical Energy Star or Low-E windows
Potential for significant reduction in energy costs
Moderate to significant reduction in noise levels compared to double pane windows
Triple-Glazed: the insulated glass unit on a R5 window has three panes of glass
Krypton Gas filled between the panes (Krypton has significantly better insulating qualities than Argon)
Double Low-E glass: Low-E is on the exterior pane and the interior pane
Milwaukee Windows and Patio Doors with the R5 Upgrade
Patio Doors (Vinyl)
* not available on Rezilience series