Guide to Windows

Windows are a long-term investment. Smart shoppers purchase energy-efficient windows to protect themselves from future energy cost increases and improve comfort for years to come. Improving the energy performance of windows is important, since windows are the least insulated surface of most homes. Energy-efficient features available for new or replacement windows include:
• Low emissivity (low-E) coatings and films
• Inert gas between the panes of glass
• Insulated edge spacers
• Insulated frames
• Additional layers of glazing