High humidity levels in your home will almost always lead to mold issues.
Below, we have listed ten ways to reduce the humidity levels in your home:
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Ensure your house is adequately insulated and weather-stripped to prevent outside humidity from creeping in
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Use exhaust fans in your kitchen, laundry, and bathrooms
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Vent gas burners, clothes dryers, etc., outside
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Properly adjust humidifying devices such as furnaces and humidifiers to 35%
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Air out your house for a short period of time on low-humidity days if the weather permits
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Improve the drainage around your foundation
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Extend downspouts away from your foundation
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Regularly clean out your gutters and downspouts
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Try not to overwater foundation plants
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Fix any leaking outdoor faucets
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Invest in a dehumidifier to effectively reduce moisture levels in your home
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Install vapor barriers in crawl spaces to prevent ground moisture from entering your home.
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If you have central air conditioning, install an air conditioner vent wherever there is a humid space in your home, with returns.

