With all the talk about the environment these days, a lot of homeowners are focusing more on energy efficiency. Installing energy efficient replacement windows in your Denver, CO home can not only reduce your energy footprint, but can also save you money on your energy bill. However, how do you know if your new windows are energy efficient? With all the windows out there, it can be hard to find ones that are energy efficient if you don’t know what to look for.   

Use this list of what makes an energy efficient window to help you can find the best ones for your home.  

• Construction – Energy efficient windows lower energy costs by reducing solar heat transfer in the summer, and increasing solar heating in the winter. These properties are measured in solar heat gain coefficients, or SHGCs, U-factors and visible transmittance, or VTs, respectively. High-quality energy efficient windows should have an SHGC of more than 0.6 for maximum solar heat gain during the colder months, a high VT for more visible light transfer during the day, and a U-factor of less than 0.35 to lower conductive heat transfer. These effective benefits are from special construction properties like energy efficient window glazing, tinted glass, reflective coatings, and gas fillers.  
• Design – There are plenty of options when it comes to window design, and almost every design has both positive and negative attributes when it comes to energy efficiency. However, there are a few window designs that stand out for energy efficiency:  
  • Casement – Casement windows are hinged at the sides. They typically have low air leakage rates because their sashes press against the frame while closes.  
  • Awning – Awning windows open out and are hinged at the top. Similarly to casement windows, they prevent air leakage because their sashes press against the frame while closed.
  • Fixed – Fixed windows don’t open, making them very efficient in terms of air leakage and drafts.
  • Hopper – Hopper energy efficient windows open inward and have lower air leakage rates.
  • Double and Single Hung – Double and single hung windows have sashes that slide up and down to close or open the window.
  • Double and Single Sliding – These windows have sashes that move horizontally to close or open. They have higher air leakage rates, but do offer good insulation.

• Installation – It won’t matter if you pick the highest quality windows with ideal construction and design if they aren’t installed properly. Always hire a professional to install your new windows to ensure an ideal installation, and be sure to have your professional install your new windows according to the manufacturer’s specifications. Double check your windows for air seals, and, if necessary, install weather-stripping or caulk the window frame to form a tighter seal.  

If you have more questions about energy efficiency or Denver, CO replacement windows, United Windows & Siding can help. You can visit us in person at 12090 W 50th Pl Unit B Wheat Ridge, CO 80033, or give us a call at 720-535-4767 for more information or to schedule a consultation.