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Old 06-29-12, 10:09 AM   #4
MN Renovator
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"1. Vent warm attic air down to the basement during sunny days."

Adding high dew point hot outside air to your basement is a great way to bring condensation to your basement which brings mold. Not to mention that the moisture will spread to the rest of your house and you'll be living in wet swampy air.
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