Energy-Efficient Products

Choose one of our SolarZone Insulated Glass Packages to enhance the year-round comfort of your home while maximizing energy savings.

SolarZone Insulated Glass Packages

The SolarZone™ Insulated Glass Package combines multi-layered, vacuum deposition Low-E glass with argon gas, and a warm-edge spacer system. These insulated glass packages have been proven far more effective than ordinary clear glass units. As a means to quantify window performance, the National Fenestration Rating Council (NFRC), in conjunction with the U.S. Department of Energy, has developed a rating system for window products.

    • Lower U-Value or Lower SHGC
    • Less Heat Flow
    • Increased Insulation Value

    In addition, one of the most critical NFRC tests is for the window’s U-Value, which measures its resistance to heat transfer. The lower the U-Value, the better the window is at resisting heat flow, which results in a greater insulating value.

    Another critical NFRC test measures a window’s Solar Heat Gain Coefficient (SHGC). This procedure measures how well a window blocks heat caused by sunlight. Again, the lower the number, the less of the sun’s solar heat the window allows into the home.

    • Higher SHGC
    • More Heat Flow
    • Less Energy Consumption

    A higher SHGC is beneficial in the winter months as more energy from the sun helps heat your home, lowering energy consumption. In southern climate zones, a lower SHGC is beneficial in the summer months as it keeps the sun’s energy out of your home. A quick comparison will show that your choice of an optional SolarZone™ Insulated Glass Package will outperform clear or lesser Low-E glass packages, leading to increased energy savings.

Low-E Glass

Optional enhanced cavity foam in select mainframe channels
can help increase year-round thermal protection.

Top Benefits of Energy-Efficient Products

  • Energy-efficient windows, siding and doors save homeowners an average of 12% nationwide on their energy bill each year.
  • The reduction of energy use creates fewer greenhouse gases that seep into the environment.
  • Energy-efficient windows and doors keep a home more comfortable during extreme weather conditions.
  • 48% reduction in solar heat transfer during the summer months
  • 104% increase in R-value of the glass in winter months
  • Protect your carpet, furniture and draperies from fading
  • The Intercept™ Spacer System will extend the life of your windows

Thermal Performance Comparison*

 Double-HungSliding
U-FactorSHGCU-FactorSHGC
Clear Glass
0.450.570.460.58
SolarZone
0.290.300.290.30
SolarZone Elite
0.290.210.280.21
SolarZone ThermD Elite
0.280.210.270.21
SolarZone Plus Elite with
Enhanced Cavity Foam
0.260.210.260.21
SolarZone TG2 Elite
0.210.190.210.19
  • Clear: Double-pane clear glass unit.
  • SolarZone: Double-paned unit with one pane of Low-E glass, argon gas, and metal alloy Intercept spacer.
  • SolarZone Elite: Double-paned unit with one pane of Low-E SHGC glass, argon gas, and metal alloy Intercept spacer.
  • SolarZone ThermD Elite: Double-paned unit with one pane of Low-E SHGC glass, argon gas, and stainless steel Intercept spacer.
  • SolarZone ThermD with Enhanced Cavity Foam: Double-paned unit with one pane of Low-E glass, argon gas, and stainless steel Intercept spacer, along with enhanced cavity foam mainframe.
  • SolarZone TG2 Elite: Triple-pane unit with one surface of Low-E SHGC glass, one surface of Low-E glass, argon gas and intercept Stainless Steel Spacer.

*Whole window values are based on double-strength glass, standard 4000 Series offering with composite reinforcements. Grids, ST and HP performance values are also available.

When it comes to making your home energy efficient, there is no risk. The payoff is not only significant, but also tangible. You reap the benefits in comfortability and cost because energy-efficient replacement windows, siding and doors are investments that pay for themselves. If you are ready to see the difference and enjoy being comfortable in your home again, request a free in-home estimate with Window World of Joliet today.

3 windows, 90 minutes, 12 degree weather. We had our first experience with Window World this week, and you more than exceeded our expectations. I can’t say enough about the professional crew and quality of service. 3 down and 15 to go!

– Mike D.

“This is a great company where everyone is super nice, not pushy and very knowledgeable. The installation was handled by Brandon with precision and perfection. Rich the salesperson is very personable, Frank and not pushy. Joe the measuring guy was also very efficient! Price, product, and honesty – a combination for a great experience!”

– Mike M.

“Great experience! Had a window installed in the garage, repair work to a bay window, window capping and caulking performed on other windows- looks terrific and attention to detail obvious. The crew of Brandon and Marty showed up on time, cleaned up nicely, and pleasant. Call Window World of Joliet!”

– Jeff J.

Request a free in-home estimate today.

We’ll be in touch with you to help you decide the best option to fit your style and budget. We look forward to working with you!

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