Area
Tybee Island, GA
Crawl space dehumidifier installation for a Tybee Island coastal home with an existing vapor barrier that was struggling to manage summer humidity.

Tybee Island, GA
Crawl space dehumidifier installation
Tybee Island home had a vapor barrier installed approximately four years earlier. The homeowner began measuring crawl space humidity after noticing a slight return of musty odor during peak summer. Readings were consistently between 68% and 74% relative humidity — well above the recommended 55% or below for sealed crawl spaces.
Inspection and assessment of existing vapor barrier condition (found in good shape with two minor seam separations that were re-taped), installation of a 70-pint capacity crawl space dehumidifier with automatic humidity setpoint, and routing of the drain line through the foundation to daylight on the exterior.
Within three weeks of installation, crawl space humidity stabilized at 49–53% relative humidity. The homeowner reported the odor was completely gone. The dehumidifier runs approximately 4–6 hours per day during peak summer humidity and less than 2 hours per day in cooler months.