We had RPM Window Films install window films on the windows of our house (both east and west window facing). The film used on our windows was dreadful. Although we specifically said we did not want reflective window coverings, that was what was installed. To make matters worse, it was not even properly affixed (there were bubbles throughout, and the edges were not sealed properly).
We called Ron, the owner, who said the problem was with the windows, not his window film (an impossible claim given that he had installed window film on our previous house which had the same windows as with our present home). Clearly, this was not the film we asked for, nor wanted, and we ended up removing the window film ourselves after a few days.
If you want proper window film with a company that will take responsibility for their work, do not use RPM Window films.