Fireplace dampers should be sealed with weatherstrip when not in use to prevent energy loss, as they are the largest unsealed openings in homes, costing families billions in wasted energy. Sealing the fireplace can save an average of $300 annually on energy costs and reduce heating and cooling demands by up to 30%. Solutions such as the 'fireplace plug' offer an effective and easy way to seal these openings, significantly improving energy efficiency and indoor air quality.
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