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Window Ventilation vs Exhaust Fans for Bathroom Mold Prevention in Cold Weather

https://post-wiki.win/index.php/Window_Ventilation_vs_Exhaust_Fans_for_Bathroom_Mold_Prevention_in_Cold_Weather

In cold weather, opening a window for bathroom ventilation might seem like a quick fix, but it can backfire by chilling surfaces and increasing condensation. An exhaust fan, especially one with a humidity sensor, removes moist air directly rather than just stirring it around, making it far more effective for preventing mold when the temperature drops.