To prevent cold air from passing through your windows, there are several steps you can take:
1) Use weatherstripping: Install weatherstripping around the edges of your windows to seal any gaps that may be letting in cold air.
2) Use draft stoppers: Place draft stoppers at the bottom of your windows to prevent drafts from entering your home.
3) Add insulation: Insulate your windows using insulating films or cellular shades to create an extra barrier between your home and the cold air outside.
4) Install storm windows: Install storm windows on the outside of your existing windows to provide an extra layer of insulation.
5) Seal any cracks: Seal any cracks or gaps around your window frames using caulk or foam insulation to prevent cold air from seeping in.
6) Install window coverings: Install thick, insulating window coverings such as curtains, drapes, or blinds to help trap heat inside your home.
7) Keep windows locked: Keep your windows locked, as this can help create a tighter seal between the window and the frame.
By taking these steps, you can prevent cold air from passing through your windows and improve the energy efficiency of your home.