We have a two-story house. The upstairs has two windows and a ceiling fan but during hot weather it was unbearable. After the painting (of Invisaflects) it felt like you could breathe. Even during the hot weather, it was comfortable up there. The best part is not putting in the window air conditioning. Now when you open the closets you don’t get a cold blast in the winter and a hot blast in summer. We’re glad we had the painting done.