‘Tis the season to don a sweater and hibernate. But before you start your seasonal slumber, insulate your windows for goodness sake. It’s a simple low-cost upgrade that will boost the efficiency and coziness factor of your home this winter.

Here’s how to insulate your windows from the inside.

Or, if you prefer to insulate your windows from the outside, check out this demo.

Do keep in mind that most hardware stores sell low-cost window film kits. But these tend to be disposable, so if you can, spring for a reusable kit like the one offered by Niagara Conservation. Whenever possible, buy items like this from Canada’s Ecostores and green building product retailers! If you must use the disposable kind, be sure to recycle the plastic at the end of the season.

(Image Source: Niagara Conservation)