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Energy-Efficient Glass Options

Comfort Guard Window Glass

Stanek windows are made with a variety of high-performance glass options to meet your energy performance and budgetary needs. Glass performance is key to achieving lower energy bills. The type of glass in a window affects the flow of heat in and out of your home, the amount of light that comes through the window as well as the amount of noise that you hear from your home. Windows also play a major role in the energy efficiency of a home. Experts estimate that 70 percent of energy loss occurs in windows and doors and 90 percent of window heat loss occurs through the glass.


The glass you choose for your windows is the most important decision you can make. At Stanek Windows, high-performance triple-pane low-e glass with argon gas comes standard to maximize your comfort and lower your heating and cooling costs. Our windows are ENERGY STAR® rated in all climate zones in the United States. Our triple-pane, low-e, high-performance glass is among the most energy-efficient triple-pane glass on the market and has earned the highest energy-efficiency rating from ENERGY STAR.


  • Energy-efficient triple-pane glass design
  • Two panes of double-silver low-e coating
  • Insulated with argon gas
  • Warm-edge spacer technology helps prevent seal failure and prohibits the transfer of heat


  • Retains the most heat in the winter keeping your home warmer while reducing energy costs
  • Reflects most heat in the summer to reduce cooling costs
  • Saves your fabric, furniture and floor coverings from fading by blocking UV rays 99 percent more effectively
  • Controls glare in bright, sunny climates
  • Maximum noise control
  • Earns the highest energy efficiency rating from ENERGY STAR®
  • Standard in all window options
  • Best for use in: All Climates, especially where extreme cold or extreme heat occur. Also ideal for maximum noise control.

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