There are a number of factors that impact the energy efficiency of windows. Here are a few terms that will help.

• U-Factor: U-Factor is an important number to consider and use when comparing windows for insulation value. All of our windows are labeled with a U-Factor. Since windows are a complex assembly, U-Factor considers all contributions to insulation and heat transfer.

• Glazing: Glazing options may vary by region. Double pane is the most common. Other options might include: single-glazed which is typically only found in southern climates and triple glazed which is often better suited for more northern areas.

• Low-E : Low-E – or low emissivity – is an invisible metallic coating on the glass designed to reflect infrared light, keeping heat inside in the winter and outside in the summer. It also reflects part of ultraviolet light to protect interior furnishings from fading prematurely. Low-E is often the best choice for energy efficiency and frequently standard on many products.

• Rebates: Many utility companies are now offering cash rebates for the installation of energy-efficient windows.

If you have any further questions, don’t hesitate to contact us.