I understand that Hüper Optik® films help me keep the heat out during hot seasons. Does it help me keep the heat in during cold periods?
A. Hüper Optik® films have, to a certain extent, Low-E properties that help retain the heat in cold weather. Other Low-E films that specialize in keeping the heat in may have superior performance when it comes to heat insulation, but it compromises on other key features like Total Solar Energy Rejected (Tser).