According to the U.S. Department of Energy, 10%-25% of the energy you use to heat and cool your home is lost through inefficient windows. During the summer, your air conditioner works harder to cool hot air from drafty windows, and cold drafts entering your home during winter. But will window replacement really help you save energy and money?
If you are looking for new windows you’ve probably run into a lot of information on window energy efficiency. But terms like glass packs, gas fills and Low-E coatings might leave you clueless. In this post window contractor, Renewal by Andersen® of Cape Cod will answer the most frequently asked questions about energy-efficient windows. Here’s a quick FAQ to get you started:
1. Should You Get Energy-Efficient Windows?
Yes! While the most practical benefit energy-efficient windows have to offer has to do with energy savings, they can also help improve overall comfort in your home. Not to mention that newer windows replacement are exceptionally designed, contributing toward boosting your home’s curb appeal
2. What Are Low-E Windows?
Low-emissivity (Low-E) windows feature a microscopically thin coating of metal oxide that works to block heat from the sun to prevent passive heating without hampering natural light. This helps keep cooling costs down and reduces dependence on artificial lighting during the day, both of which can affect your energy bill.
3. Are Gas-Filled Windows Safe?
Modern windows typically come with multiple panels of glass, Low-E coatings, and a gas-injected spacer system between the panes. Gas-filled windows minimize heat loss and transfer between the panes of glass. Argon is the most commonly used gas filling for window panes because it is non-toxic, non-reactive, clear, and affordable.
4. What Is ENERGY STAR®?
ENERGY STAR is a program designed to promote energy efficiency. Run by the U.S. Department of Energy and the Environmental Protection Agency (EPA), it provides information on which products are energy-efficient, helping consumers make informed choices. ENERGY STAR-certified windows are guaranteed to be energy-efficient, having met standards set by the program.
5. What does it mean to be an ENERGY STAR-certified window or door?
To obtain ENERGY STAR certification, a window or door must meet a set of requirements that are determined by the U.S. government. Those requirements differ based on geography. The certification is meant to indicate that the window is energy-efficient in the region where it will be used, and can help homeowners save on energy costs.
6. How do I know which glass option makes the most sense for my home?
When you are comparing window glass options, keep the following in mind:
a. A “good” U-factor is <.30
b. A “good” SHGC depends upon your climate
c. If you live in a colder climate, you’ll generally want a window replacement with a low U-Factor and higher SHGC
d. Generally, you’ll want a lower SHGC if you live in a warmer climate with intense sun
7. What will make a window more energy-efficient?
A vinyl window or door by its nature is an extremely energy-efficient product. Since vinyl is nonmetallic, it is inherently more thermally efficient than other products on the market. The conduction of heat through a vinyl window is minimal compared to windows made of aluminum or any other metallic substance. Vinyl’s thermal properties and insulating values make it an excellent choice for use in cold climates as well.
To learn more about energy-efficient windows, schedule your free no-obligation consultation with our team. Call Renewal by Andersen of Cape Cod today at (508) 205-1200 or fill out our convenient request form. We serve clients in Cape Cod, MA.