Now is an opportune time to take a good look at the energy efficiency of your windows. Loss of cooling or heat in the Winter, draftiness, and high electric bills are telltale signs that your windows are not as energy efficient as they once were and that it might be time to replace them. Age – of both the home and the windows – is another factor to consider in the process of deciding to replace your windows. If your home and/or windows are 20 to 30 years old or older, it is probably time to swap out the old windows for new, more energy efficient ones. And, when you realize that windows account for your use of 15% to 30% of heating and/or cooling energy, the impact of that on the environment – and your energy bill – is considerable.
If, however, your windows are not that old but they are lower quality and contribute to energy loss, you can take direct steps to improve their energy efficiency. For example, you can caulk or use weatherstripping around the edges to prevent drafts. You can hang thermal/insulated window curtains or blinds, as they are made specifically to maximize energy efficiency. In warm climates where you want to keep cool, conditioned air inside and the heat of the sun outside, you can apply special solar film to the glass or even place an awning or hang shutters over the window on the outside. These do-it-yourself solutions help some; but, in most cases, new windows may be the best solution for true energy efficiency.
Where to start? We’ve all seen television commercials touting offers to buy one window, get another at X% off. These ads may sound good, but savvy homeowners know that price is not the only factor to consider when it comes to selecting the right windows for energy efficiency. The Energy Saver website of the federal government’s Office of Energy Efficiency & Renewable Energy provides helpful information regarding the recommended energy and other performance ratings of windows by climate zone. And ENERGY STAR, the program run by the U.S. Environmental Protection Agency (EPA), provides information regarding the levels of energy consumption and energy efficiency on windows and skylights. ENERGY STAR certifies windows that perform at or above the energy efficiency levels set by the EPA. The National Fenestration Rating Council (NFRC) further rates energy efficiency of ENERGY STAR-certified windows. So, the best place to start is to make sure the windows you purchase are certified to meet the energy efficiency guidelines for your area.
Proper selection of energy efficient windows depends on the climate where you reside. Is it cooler? Warmer? More temperate? What is the orientation of your home? How much shade does your home receive? In addition, a variety of other factors come into play when determining the best window type for your home. For example, the U-factor; the solar heat gain coefficient (SHGC); air leakage rating; and window glazing. A home improvement specialist or window company professional can guide you to select the appropriate windows for your home.
Installing windows is also important, and installation will be different for a new construction home versus replacement windows on an existing home. Even if you buy the most energy efficient windows on the market, if the windows, flashing, and air sealing are not installed according to manufacturer’s instructions, they might not perform at optimum levels of efficiency and comfort. And, worse, the window warranty might be void.
Homeowners would do well to understand the basics regarding energy efficiency as it pertains to windows. When you are ready to purchase, work with a professional who can recommend the best type depending on your home and location.
If you would like to learn more about energy efficient replacement windows and the type that will work best for your home, contact Sovereign Construction Services. Sovereign is a full-service home construction and remodeling company. Owner Steve Rush is experienced in all types windows, including installation. Steve is available for a free consultation to help you learn more about windows or any other home improvement project you may have. Call Steve today at 610-639-2986.