I just pulled cling film over the window and was surprised how warm it became in the house.

The video explains how to keep a home warm by sealing cracks around doors and windows, using a blanket under the door, foam to seal window sills, bubble wrap, and a thin cling film. The cling film is applied to the window frame, not the glass, creating an air space that acts like a third pane, reducing heat loss and preventing condensation. This simple, inexpensive method helps save on heating costs.