Types of Energy Efficient Windows

Written by AnonymousApril 21, 2011
Energy Efficient Windows

Looking at the Different Types of Energy Efficient Windows

Energy efficient windows keep cold air out during winter and air conditioning in during summer. These windows typically have more than one layer, low-E coatings, and high quality edge spacers and frames. Regardless of the type of energy efficient window, all offer energy cost savings thanks to less air leakage, less condensation, and increased light, which can reduce heating bills during winter.

With the right glazing or coatings, any type of window can be an energy efficient window, but  some styles are more often thought of as energy efficient than others. They are:

  • Fixed-pane windows are the most energy efficient type of window. They don’t open and are sealed around the edges to prevent air infiltration. These airtight windows are easy to clean and come with double or triple glazing for even greater energy efficiency. Fixed-pane windows cost 15 percent less than windows that open.
  • Casement windows are the second most energy efficient window. They’re hinged on one side and crank open to the left or right. They can be installed anywhere, but are common over sinks and countertops. Prices for casement windows vary by manufacturer, size, material, and type of hardware. Prices range from $200 to $2,000 or more.
  • Awning windows are like traditional casement windows, but instead of pivoting on hinges mounted at the top, they pivot on hinges mounted on the side. The construction is weather-tight, so they offer a strong seal against air pass through during winter, without compromising ventilation during the warmer seasons. The cost of awning windows vary based on material, size, and manufacturer. Prices range from $350 to $1,050 or more.

When purchasing energy efficient windows, look for the National Fenestration Rating Council (NFRC) label. It lists information about the energy performance of windows including ratings for air leakage, solar heat gain, and condensation resistance.


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