It has been proven that the higher quality films block up to 79% of the solar heat, reduce glare up to 83%, block 99% of UV rays and reduce heat loss in winter by up to 30% (low E films).

Does window film Reduce heat?

Window film blocks radiant heat flow, keeping hot air out in the summer and making it easier for your air conditioner to do its job. ... They usually have windows that aren't very efficient in blocking heat or UV rays. Homes with inexpensive windows can also be helped by some types of window films.

Do thermal window films work?

An insulating window film applied over a window can help the window retain up to 55 percent more heat in winter, potentially reducing your heating costs up to 30 percent. These films are less effective at reducing summer heat gain, though.