Aim to keep basement humidity between 40% and 50% in summer to prevent mold, musty smells, and allergens. Use a hygrometer to monitor humidity, fix drainage or flooding issues, and consider a vapor ...
A basement dehumidifier should be set to maintain a relative humidity of 45% to 50%. A basement dehumidifier setting can be slightly increased to 50% to 55% while you're away to conserve energy.
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What Should a Basement’s Humidity Be?

You’ve heard the phrase: “It’s not the heat, it’s the humidity.” Uttering this inspires knowing nods or annoyed eye rolls, ...