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.

Help Save Energy and the Environment

Energy Efficient Windows

In most instances, your windows come standard with the ENERGYSTAR® Qualified SolarZone™ Insulated Glass Package.

Window World of Connecticut’s windows are already designed for superior thermal performance. By choosing our SolarZone™ Insulated Glass Package, featuring the Duralite® Spacer System, you can help reduce your energy costs even more, while helping cut consumption of the fossil fuels that pollute our environment.

What Makes the SolarZone™ Insulated Glass Package So Effective?

Since over 80% of a window is glass, substantial heating and cooling savings come from improved glass performance.

  • Our Duralite spacer system creates significant energy efficiency. It is 88% less conductive than metal spacers, offering superior insulation performance. 
  • Adding Low-E glass to a standard insulating glass unit helps you improve the energy performance of your window year-round by 24%. 
  • Adding argon gas filling to the window increases efficiency by another 6%.

The result: your monthly utility bills will reflect savings year round and that should help make you even more comfortable.

The Duralite® Spacer System Difference

The Duralite spacer reduces conductivity by 45%. This means less heat loss and greater comfort in your home. Its innovative design eliminates metal in the window spacer and replaces over 60% of the window spacer profile with air. It features an air-filled polycarbonate shim, butyl sealant, three-sided continuous moisture barrier, and desiccated topcoat to deliver consistent, long-term performance. 

Now that you know the details, continue reading about the benefits below.

Enhanced Comfort & Thermal Performance

Inefficient windows allow warm air to escape your home in the winter and enter during the summer. This reduces interior comfort while needlessly overworking your HVAC equipment and increasing your energy costs. Windows built with our Duralite spacer system reduce air transfer, resulting in more comfortable and energy-efficient homes.

Improved Argon Gas Retention

The Duralite spacer system is built to provide enhanced argon retention. The spacer features one of the industry’s best argon-resistant adhesives, which keeps the gas inside the insulated glass unit longer to help minimize overall energy consumption. 

Reduced Condensation

Condensation build-up in windows is most often the result of a poorly sealed insulated glass unit. This can obstruct views, reduce natural lighting, and increase the risk of mold formation. IGU’s built with our Duralite spacer system can help prevent condensation formation, allowing for better clarity.

Measuring Heat Loss Through U-Values

For all window products, the National Fenestration Rating Council (NFRC) has created the NFRC-100, which is the standard test for heat loss through a fenestration, or window product. Once the testing procedure is completed, a U-Value rating is applied to the window product. The lower the U-Value, the better the product is at resisting heat loss.

Window Glass Options