Windows are An important stage of heat exchange in households. In the course of colder months, warmth from inside of can escape throughout the Home windows, even though in hotter months, outdoors heat can penetrate indoors.- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -