Windows Tips 2: Cold-Climate Windows Keep Heat In

Cold-Climate Window Tips

Illustration shows how a double-pane window with low-e coating keeps hot air inside by reflecting heat  back into the room.Cold-Climate Windows Keep Heat In
Double-pane windows with low-e coating on the glass reflect heat back into the room during the winter months.

  • You can use a heavy-duty, clear plastic sheet on a frame or tape clear plastic film to the inside of your window frames during the cold winter months. Remember, the plastic must be sealed tightly to the frame to help reduce infiltration.
  • Install tight-fitting, insulating window shades on windows that feel drafty after weatherizing.
  • Close your curtains and shades at night; open them during the day.
  • Keep windows on the south side of your house clean to let in the winter sun.
  • Install exterior or interior storm windows; storm windows can reduce heat loss through the windows by 25% to 50%. Storm windows should have weatherstripping at all movable joints; be made of strong, durable materials; and have interlocking or overlapping joints. Low-e storm windows save even more energy.
  • Repair and weatherize your current storm windows, if necessary.
Illustration shows how a double-pane window with spectrally selective coatings prevents heat coming in from the outside and allows light to come inside.