Originally posted on Window Film Online:

Window Films are capable of rejecting Infrared (IR) but oftentimes this can be mistaken for Total Solar Energy Rejection. Improperly educated window film dealers, crafty marketing on the part of manufactures, and a lack of standardized testing can propagate misinformation leading a consumer to conclude that a window film will reject up to 98% of the heat! This just isn’t true at all. Let’s take a few paragraphs and learn what infrared is, why it is listed on some specification cards, and how IR rejection should be interpreted.

Infrared –What is it?

Energy created by the sun travels to earth in different wavelengths. These wavelengths make up what is known as the “Electro Magnetic Spectrum” or EM spectrum for our acronym dependent crowd out there. The diagram above illustrates how differing wavelengths affect us in different ways. When it comes to our windows and energy control we are affected primarily…

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July 10 2014