The relative amounts of daylight transmitted by spectrally selective and standard films are shown in Figure 2. Although spectrally selective films cost about twice as much as standard films, they make it possible to capture additional energy savings through the use of daylight-dimmable lighting systems. Other window coverings. Some of the benefits of window films can be obtained by more conventional means such as shutters, shades, and draperies. However, shutters hide the beauty of the window and darken a room when closed.
Shades can also block much of the outside view and reduce the ability to use daylight.
Draperies, although they add design appeal to a room, aren't much help in controlling energy loss even when closed. Top of Page How to Make the Best Choice Review occupant comfort. If you answered yes, there's a good chance that window films can help your facility save energy. Estimate the savings potential. A computer simulation will usually be necessary to calculate the potential energy savings from window film installation.