Energy Efficient Windows Evolution

Have you ever wondered what the history of energy efficient windows is? Check out our latest infographic.

Harvey infographic: Evolution of the energy efficient window

Pulled Copy:

1920s: The Age of the Skyscraper

Architects during the 1920s began considering how the sunlight through the windows affected occupant comfort.

1940-50s: Double/Triple Glazing

While these insulated glass units (IGUs) did a great job at insulation, they were very expensive.

1960s: New Technology of Glass Coating

In 1963 the first coated glass was developed and limited the amount of sunlight that enters a building.

1970s: The Energy Crisis

The U.S. Government began funding research to address the energy inefficiencies inherent in large companies, to see where improvements could be made and costs lowered.

No more aluminum. Manufacturers began understanding the aluminum was insufficient for insulation and transitioned to wood or wood/vinyl window frames.

1980s: The Low Emissivity Era

Manufacturers began using Low-E glass, which not only kept heat from seeping out, it prevented outside temperatures from seeping in.

1990s: Electrochromic Glazing

This process gives the glass a ceramic coating and uses electricity to tint the glass thereby blocking sunlight.

2000s: Thermochromic Glass

Manufacturers sought to create a similar technology to electrochromic where sunlight would cause the glass to tint as opposed to electricity.

2010s: Thin-Film Photovoltaics

In the 2010s, this technology was developed that not only reduced energy consumption but was also capable of harvesting solar energy.

The Future: Energy Efficiency

Researchers in China are exploring transparent wood as a more energy efficient alternative to glass, which is bulky and heavy.

Generic windows are for generic homes

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