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Check On Important Insulation
Specifically, check on weatherstripping around your doors, windows, and garage door. The felt strips seal these openings to prevent drafts, but they can wear down over time. Replace any faded weatherstripping and complete any other insulation tasks you’ve been putting off.
Plus: Replace Weatherstripping
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Seal Any Air Leaks in the Attic
If you see any light shining through chinks in your attic, you have air leaks (and pest entrances). Seal those off with foam insulation to keep your house warm over winter. Do not try to close off any attic vents, however, as you’ll need those to get rid of humid air.