Seal drafty windows to keep heat in and energy bills low with one of these two simple tasks. First, caulk the cracks. Sold in temporary or permanent form, caulking is inexpensive and easy to apply. Second, cover your windows in a thin plastic film and tape it down with waterproof double-sided tape, heating the edges with a hair dryer and pressing the protective layer into place. When it gets warmer outside, simply peel the film off, open the window, and let the sun shine in. Learn more via this resource.

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