Total Solar Energy Rejected (TSER) = The percentage of total solar energy rejected by filmed glass. The higher this value, the less solar heat is transmitted.
Here is something puzzling. I bought two tints to try on windows. The lower one on the left (NR Smoke 20) has Total Solar Energy Rejected value of 37% while the one 2nd to the top of right (Charcoal 22) has Total Solar Energy Rejected value of 55%. When I tried them. The Charcoal 22 is lighter and you can see the outside more clearly. but it has higher Total Solar Energy Rejected value of 55% versus the NR Smoke 20 which is darker but lower TSER value of 37%.
Total Solar Energy Rejected value is based on the visible, UV and IR filtering values. So the higher it is. The less is the light passing through so the higher is the value it should be darker, yet in actual it is clearer.
Can anyone explains why?