Energy efficient window treatments can be used but not just for decoration reasons but for saving the energy. When the treatments are chosen carefully, they may reduce the heat loss during winter and they reduce the heat gain during summer. Window blinds that are horizontal or vertical slat type are known to be effective when it comes to reduce the heat in the summer but are not that good when it comes to the winter heat loss. The capacity of the draperies to deal with the heat can depend on many things such as colors and the type of the fabric. The energy efficient window treatments made in the high reflective films can help in blocking the heat gain in the summer.