Window Insulation Service

Windows account for 30-50% of all energy waste in air conditioned buildings.  Our clear window insulation is a breakthrough in nano technology.  It blocks up to 98% of infrared heat and 99.9% of UV for glass and plastics without blocking visible light.  This is 3 times the efficiency of ordinary plastic window tints.

  • Improves thermal performance of any window or skylight.
  • Far superior to plastic films.  Lasts longer.  Won’t peel, crack, chip or bubble.
  • Exceeds stringent California Energy codes and adds USGBC LEED credits.
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In the United States alone, more than 40% of all buildings were built before 1990 and are comprised of un-insulated single-pane windows. Billions of square feet of windows are responsible for over 25% of all energy waste in the built environment.  Even so, many windows do not get replaced due to the high capital cost and modest ROI, leaving window tint or blinds as the best alternatives.  Until now.

3fficient’s window insulation is a new, cost effective alternative that delivers year-round energy savings in any type of climate.  We use spectrally selective thermal nano-coatings that are ideal for single-pane glass and polycarbonate surfaces. These coatings block up to 100% of Ultraviolet (UV) rays and 98% of Infrared (IR) heat while maintaining up to 96% Visible Light Transmission. That’s a huge improvement over conventional plastic films that darken rooms.

Even better, our “paint on” coatings do not peel, crack, bubble or fade over time.  They can be applied to bent glass, historic building windows, skylights and even textured glass surfaces enabling energy savings where it was previously impossible.  By mitigating both radiant and conductive heat, your upgraded windows and skylights will make your buildings more efficient and comfortable year round.  All while allowing in free natural daylight.

So instead of replacing or “tinting”, consider having your windows insulated by 3fficient.


  • Warranted up to 10 years.
  • Standard product has 10% tint to cut glare.
  • Special access, scaffolding, lifts, extra travel or prevailing wage requirements may be extra.
  • This service is not available everywhere, but rest assured, we will do our best to solve your needs.

For more on the science of window films, read this article.

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