Windows are An important point of warmth exchange in residences. During colder months, heat from within can escape from the Home windows, although in warmer months, outside the house heat can penetrate indoors.- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -