Control Indoor Air Humidity to Stop Mold Damage

Mold thrives in environments with relative humidity above 60%. The ideal indoor humidity range is 30% to 50%. Maintaining this range is one of the most effective ways to prevent mold growth in your home.

Watch for these indicators that your indoor humidity may be too high:

• Condensation on windows
• Damp or clammy feeling in rooms
• Musty odors
• Peeling wallpaper or paint
• Visible moisture on surfaces

Place dehumidifiers in high-moisture areas like basements, bathrooms, and laundry rooms. Choose a unit rated for the size of your space and empty the collection tank regularly, or connect it to a drain for continuous operation.

Use exhaust fans in bathrooms and kitchens. Ensure your attic and crawl space have adequate ventilation. Open windows when weather permits to allow fresh air circulation. Consider a whole-house ventilation system for comprehensive humidity control.

Your HVAC system plays a major role in controlling indoor humidity. Regular maintenance, including filter changes, coil cleaning, and duct inspection, helps your system manage moisture effectively and prevents mold growth in the system itself.