Portugal already has energy label of Windows.
CAIXIAVE is an adherent of the CLASSE + label. This etiquette is essential to make the right choices to improve your home because it allows you to compare the energy efficiency of some of the most important elements of your building and you will see that it only has advantages:
In the case of windows product, the label informs about the energy performance between products of the same type, allowing to compare and recognize the best solutions quickly. More efficient windows mean greater energy savings, better sound insulation and greater thermal insulation.
Replacing your old windows with efficient new "Classe A +" windows allows you to save energy, money on the energy bill and gain more comfort.