Low-E 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 South Carolina.

Energy Saving Estimator
Simply tell us your average monthly energy costs, and we'll tell you how much you could be saving each year with Energy Efficient Replacement Windows:

Over 1 Year:$0.00
Over 2 Years:$0.00
Over 3 Years:$0.00
Over 4 Years:$0.00
Over 5 Years:$0.00
Calculation based on 30% energy savings. Your results may vary based on location and construction variables. Please contact your local Window World store for details on our Energy Savings Pledge.

ENERGYSTAR® Qualified SolarZone™ Insulated Glass Package

What Makes the SolarZone™ Insulated Glass Package Energy Efficient Windows So Effective?
Since 80% of a window is glass, substantial heating and cooling savings come from improved glass performance, creating a window that is extremely energy efficient.

  • Our combination of UV-filtering Low-E Glass (LG), insulating argon gas and the Duralite® Spacer System creates significant energy efficiency for your windows.
  • Together they can cut the damaging effects of the sun, which can lead to faded carpets, curtains and furniture.
  • In winter, a warmer glass temperature is maintained, increasing the R-value by an additional 104%.
  • In summer, a 48% reduction I solar heat gain helps cut air conditioning costs.
  • The result: your monthly utility bills will reflect savings year round – and that should help make you even more comfortable.

How does Low-E Glass (LG) work?

Low-E glass keeps your home cooler in the summer
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 keeps the heat from getting out in the winter
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 Duralite® Spacer System work?

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

How do Duralite® 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 a Duralite® Spacer System can be dramatic.

How do Duralite® Spacers Help Windows to Last Longer?

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

Thermography heat maps dramatize the difference.
The window on the left is a 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 containing the Solarban® 60 Low-E insulated glass unit.
Window Heat Emissions Comparison

Energy Efficiency Adds Up When it Comes to Windows

The Cost of Energy Efficient Windows

  • By adding Low-E glass to a standard insulating glass unit, you can improve the energy performance of your window year round by 24%.
  • Also, by adding argon gas filling to the window, which is a better insulator than normal air, you can increase the energy efficiency by another 6%.
  • And lastly, by adding the Duralite® Spacer System, you can add yet another 5% of energy saving!
  • That’s why your choice of ComfortWorld Windows with the SolarZone™ Insulated Glass Package is the most energy efficient window product on the market today!