Selecting new windows for your home is not just about aesthetics and functionality; it’s also about energy efficiency. Windows are critical components in maintaining your home’s energy consumption, comfort, and protection against the elements. In this blog post, we’ll help you understand what energy performance ratings mean so you can choose the best windows for your home.
The Importance of Energy Efficiency in Windows
Energy performance ratings on windows determine how well they can insulate your home and keep out unwanted heat and cold. Look for windows with favorable ratings to ensure both energy savings and indoor comfort. For residents living in areas where weather conditions can vary significantly throughout the year, choosing the right windows with the proper energy performance ratings is essential.
Deciphering the NFRC Label
When you browse through options provided by window replacement companies, you’ll likely encounter the National Fenestration Rating Council (NFRC) label. This label is the benchmark for window energy performance, offering a reliable way for consumers to compare products based on their energy efficiency.
Solar Heat Gain Coefficient (SHGC)
SHGC measures how much solar radiation passes through a window, contributing to indoor heat gain. The best SHGC rating depends on your home’s exposure to sun and shading. You may opt for windows with a lower SHGC to minimize cooling needs in summer while retaining warmth in the winter.
U-Factor
U-factor is the rate at which a window allows non-solar heat to flow through it. Homeowners should look for windows with a lower U-Factor in the winter to improve insulation and reduce heat loss. This is especially crucial in cooler months when you want to maintain a warm and cozy indoor environment.
Visible Transmittance (VT)
VT indicates the amount of visible light that penetrates a window. By selecting windows with a higher VT, homeowners can utilize natural daylight to brighten their space, potentially reducing the need for artificial lighting.
Additional Factors to Consider
Another thing to consider is the window’s air leakage, which indicates the propensity for drafts. A low air leakage rating will mean better insulation against outside elements. Meanwhile, a higher condensation resistance rating suggests more effective moisture control, which can be particularly important in colder climates.
ENERGY STAR® Certification
ENERGY STAR-certified windows meet stringent energy performance standards set by the U.S. Environmental Protection Agency (EPA). STL Design and Build can guide you to ENERGY STAR-certified windows that will complement your home, ensuring that your selection promotes energy conservation and cost savings.
Knowing these ratings will give you the confidence that your new windows will contribute to a comfortable, energy-efficient, and enjoyable home environment for years to come. STL Design and Build can help you choose the best windows for your home and ensure quality installation. Call us at (314) 329-2389 or visit our contact page to schedule an appointment.