Interested in how much energy efficient windows could be saving you?
The ENERGY STAR savings estimates for windows are based on energy calculations performed by D+R International using Lawrence Berkeley National Laboratory’s (LBNL) energy use and cost model based on EnergyPlus 9.5 for typical homes in 132 U.S. cities.
Graphic and information courtesy of D&R International.
If you are interested in more information on ENERGY STAR’s methodology for these window cost savings, please visit this methodology page.