What are good energy efficient windows?
- OUR MOST POPULAR ENERGY EFFICIENT GLASS OPTIONS: DOUBLE PANE EXTREME LOW-E WINDOW GLASS.
- ULTRA TRIPLE PANE GLASS. Highlights.
- ULTIMATE TRIPLE PANE GLASS. Highlights.
- SOLARBAN 70XL WINDOW GLASS.
- SUPER SPACER WINDOW GLASS.
- LAMINATED WINDOW GLASS.
- ENERGY SAVER R-5 WINDOW GLASS.
Furthermore, what makes a window energy efficient?
Anatomy of an Energy-Efficient Window Low-E Glass: Special Coatings reflect infrared light, keeping heat inside in winter and outside in summer. Gas Fills: Some energy-efficient windows have argon, krypton, or other gases between the panes. These odorless, colorless, non-toxic gases insulate better than regular air.
Also, do energy efficient windows work? Glass coating For energy efficient windows, a Low-emissivity glass also known as Low-E glass is used to help block the rays of the sun (90% in fact) and keep the heat inside when it's cold and outside when it's hot. There are also many glazing options, which include tints, gas fills, and reflective coatings.
Correspondingly, what is a good U value for a window?
In a cold climate a good U-factor for a window is between 0.17 and 0.39. (That's between R-6 and R-2.5). Lower is better with U-factor--the opposite of R-value, when higher is better. The low end of that range is only achievable with higher-quality triple-glazed windows--windows with three layers of glass.
What is a good Energy Star rating for Windows?
Energy Performance Ratings U-Factor ratings for windows generally fall between 0.20 and 1.20. The lower the U-value, the greater a window's resistance to heat flow and the better its insulating value. (The window's insulating value is indicated by the R-value, which is the inverse of the U-value.)