Certified Energy Auditor Practice Exam

Which technology can help in reducing the energy loss through windows?

1. Single-pane glass

2. Double-pane glass

3. External shades

4. All of the above

The correct answer is: All of the above

The technology that effectively reduces energy loss through windows includes options like double-pane glass and external shades, each serving unique purposes to enhance energy efficiency. Double-pane glass is specifically designed to minimize heat transfer. By having two panes of glass with an insulating space in between, it reduces convection and conduction, which can significantly lower energy loss compared to single-pane glass, where heat can easily escape. External shades also play a crucial role in energy efficiency. They block direct sunlight from entering the home, thereby reducing solar heat gain during warmer months. This helps maintain a comfortable indoor temperature without relying heavily on air conditioning, thus conserving energy. While single-pane glass lacks insulating properties and is generally less effective for energy conservation, the inclusion of double-pane glass and external shades emphasizes a variety of strategies available for reducing energy loss through windows. Therefore, the consolidation of these technologies into an umbrella response recognizes their collective effect on enhancing energy efficiency in buildings.