E-Film Energy Analysis

E-film is a software technology produced by the U.S. Department of Energy (DOE) and the International Window Film Association (IWFA). The Efilm simulation program allows us to project how much energy a building will achieve due to solar & thermal window film. Once a building simulation and model is complete we can determine the reduction in kWh as well as the monthly & annual dollar savings.

3M solar & thermal film save money while increasing comfort and aesthetics

Proof of Technology

Temperature loggers can also be set up within a sample area of building space to create an estimated impact of window film after it has been installed. This allows us to compare treated vs. untreated areas within a building to record the effects of the film.

Most 3M window films have an estimated 2 to 4-year return on investment period before utility rebates are realized. However, some of these figures can be conservative so the results might be different based on each individual situation. Rebates for window film vary and are determined after submission of the E-film report to the power company.