Energy Savings

Energy Savings with Energy Efficient Windows

Window World's new replacement windows provide substantial energy efficiency and savings for your home. We have saved money and energy for homeowners throughout the nation.

ENERGYSTAR® Qualified SolarZone™ Insulated Glass Package

What Makes the SolarZone™ Insulated Glass Package So Effective?
Since 80% of a window is made of glass, a substantial amount of heating and cooling savings comes from improved glass performance.
  • Our combination of UV-filtering Low-E Glass, insulating argon gas, and a Warm-Edge spacer system creates significant energy efficiency.
  • Together they can cut damaging UV energy, which can lead to faded carpets, curtains, and furniture.
  • The center of glass U-Value of SolarZone Insulating Glass is 50% better than standard insulating glass.
  • In summer, up to a 58% reduction in solar heat gain helps cut air conditioning costs.
  • The result: SolarZone Insulated Glass Packages can help you save on energy and cooling costs while keeping your home more comfortable.

  • How does Low-E Glass work?

    Low-E glass filters long-wave radiation from the sun. This reduces solar heat gain from the sun in the summer...keeping your home cooler:

    Low-E glass takes on a new duty in winter months. It lets warm solar rays into your home...while blocking the heat in your home from getting out:

    How does the Warm-Edge Spacer System work?

  • Its one-piece metal alloy, U-channel design creates an effective thermal barrier to help reduce conducted heat loss.
  • Its sealed one-piece design makes it stronger and better at retaining insulating gas than many conventional designs.

  • How do Warm-Edge Spacers add to room comfort?

  • They keep the edges of the window glass warmer, so your home feels more comfortable in winter.
  • The temperature difference between the edge of an insulating glass unit with an ordinary spacer, and one with an Warm-Edge spacer system can be dramatic.

  • How do Warm-Edge Spacers Help Windows to Last Longer?

  • Insulated glass units expand and contract with temperature changes.
  • In conventional insulated glass units, the sealant holding the unit together takes the stress of this flexing and can cause seal failure and insulating gas loss.
  • In our unit, the spacer flexes instead of the sealant, so it resists spacer movement and premature sealant failure.

  • Thermography Images Visualize the Difference

    The window on the left is a standard clear insulated glass unit. The heat transmittance, indicated by the green, yellow and orange colors from the heat scale, is far more apparent than that of the window with the SolarZone Insulated Glass Package.

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