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Energy Star Windows

Window World of NW Michigan’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 glass, substantial heating and cooling savings come from improved glass performance.

How does Low-E Glass (LG) work in energy efficient windows?

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 Intercept™ Spacer System work?

How do Intercept™ Spacers add to room comfort?

How do Intercept™ Spacers Help Windows to Last Longer?

Thermagraphy dramatizes 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.

Contact Window World of NW Michigan today to learn more about our many Low-E & energy efficient window and glass options.