What is better, a high or low shading coefficient?
A3 – In colder, heating-dominated climates such as Canada or northern US, windows with higher shading coefficients generally are preferred and conserve energy. This so because in the longer heating season, more solar radiation, which becomes “free” heat is allowed to pass into a home. In the south, with a long air-conditioning season, it is most important to reduce solar gain and therefore reduce air conditioning loads.
