March 5, 2004


Not all low-e glass is created equal with regard to color filtering. Some low-e glass is remarkably close to #1-clear glass. Others filter out substantial portions of red and/or blue light, creating color distortion of transmitted. The lesson learned here is similar to the one manufacturers of compact fluorescent lights (CFLs) have learned: high performance is not just about energy—it’s about achieving energy savings without sacrificing other aspects of performance, such as color rendering.