Energy Star window standard

Energy Star window standard

A standard for window performance established by the U.S. Department of Energy (DOE). Energy Star window criteria are climate-zone dependent; the DOE divides the country into four climate zones. In the northern zone, the U-factor of an Energy Star window must be no higher than 0.35. Energy Star windows sold in the southern zone must have a maximum U-factor of 0.75 and a maximum solar heat gain coefficient (SHGC) of 0.40. The criteria for the two central zones fall within the ranges established by the coldest and warmest zones.
References in periodicals archive ?
With windows that deliver four times the energy saving performance of today's Energy Star window standards and reduce heating and cooling costs by up to 50 percent, as well as a full line of sustainable green building materials, Serious Materials is reengineering products to dramatically reduce the impact on the 'built environment' - aiming to save one billion tons of greenhouse gas emissions every year.
SeriousWindows and SeriousGlass products deliver four times the energy saving performance of today's Energy Star window standards and reduce heating and cooling costs by up to 50%.
Full browser ?