Saving Energy With Spectrally Selective Low-E Glass

Most Americans are probably aware that they can save energy and create a more comfortable indoor living environment by installing double pane windows, but by using spectrally selective coated glass, a double-paned window can save even more energy. Spectrally selective glass, also called Low-E (lower emittance) glass, has a microscopic coating applied to the glazing that allows selected portions of the solar spectrum to pass through it, while restricting others. The lower emittance of solar heat in and outside the home will keep certain homes warmer in the winter, and others cooler in the summer depending on the climate, and will continually save money year after year over traditional glass. This is not the dark shaded glass of the past, in fact, today's Spectrally Selective glass appears virtually clear, allowing the daylight to brightly illuminate the home, making the most use of the sun's light to reduce indoor lighting cost. There are varying types of Spectrally Selective Low-E coatings, with each variant more suitable for a particular climate zone. Windows that are energy efficient in Arizona, will not be appropriate for use in Maine. The Federal government's Energy Star