You’ve likely heard of ENERGY STAR appliances and know that they are manufactured to meet energy-efficiency standards that help the environment and save homeowners money. In fact, according to the Environmental Protection Agency (EPA), replacing single-paned windows with ENERGY STAR-rated windows can save up to 13 percent on home energy costs.
For windows, there are several general requirements to achieve this rating. The product must (1) be manufactured by an ENERGY STAR partner, (2) be tested, verified, and certified by the National Fenestration Rating Council (NFRC), and (3) have an NFRC rating that meets guidelines set by the EPA. Once these requirements are fulfilled, a product is considered ENERGY STAR certified.
So, what can you expect from a window that receives an ENERGY STAR rating? While the technologies may differ among products, they will generally include the following features:
Multiple Glass Panes
The more glass panes in your windows, the better. Double- or triple-pane windows help to reduce heat transfer, meaning that they will keep the warm air in your house during the winter and the cool air in your house during the summer. By cutting back on the amount of heat or air conditioning that passes through the windows, your HVAC systems won’t have to work as hard, and you’ll see savings on your monthly energy bill.
Gas Fills Between Panes
Another layer of insulation that is often found in ENERGY STAR windows is between the multiple panes of glass. While some double- or triple-pane windows are simply filled with air, those that contain argon, krypton, or xenon offer enhanced thermal insulation and help to minimize temperature fluctuations within the home.
Low-E Coating
Most ENERGY STAR windows also have a low-emissivity, or low-E, coating. This technology reflects radiant heat. In the summer, heat waves from the sun stay out of the home, while light waves enter. In the winter, the coating reflects heat generated inside the house back into the rooms. This thermal barrier improves comfort and reduces energy costs.
Insulated Frame Material
Many types of frame materials earn the ENERGY STAR rating. Fiberglass frames are often considered the most energy efficient; however, vinyl, wood, and composite frames also have insulating thermal qualities. With this wide selection of frame materials, homeowners can pick the windows that match their wants and needs in terms of maintenance, durability, and cost.
U-Factor Rating Appropriate for Your Climate
Not all ENERGY STAR windows have the same U-Factor rating (the measure of heat transfer), and that’s ok. A home in the southwestern United States won’t need the same level of insulation as one in the northeastern part of the country. When choosing an ENERGY STAR window for your home, make sure that it’s rated to meet the climate in your area.
True View offers an extensive selection of ENERGY STAR windows and can help you find the best option for your home, whether you’re dealing with hot Arizona summers or snowy Denver winters. To learn more about what windows are right for you, contact your local True View location.
