Whole-House Dehumidifiers

A whole-house dehumidifier removes excess moisture from indoor air and helps keep relative humidity in a comfortable range—typically where spaces feel cooler, fresher, and less “sticky.” Consistent humidity control also helps reduce musty odors and lowers the risk of mold growth in closets, ductwork, attics, and mechanical rooms.

Unlike portable units, whole-house dehumidifiers are designed for continuous performance and can be ducted to the HVAC system or use dedicated ducts depending on the install. They’re ideal for humid climates, homes with long run times, oversized cooling equipment, basements, and properties where indoor RH stays high even when the AC runs.

• Compare capacity (pints/day) to match the moisture load
• Check airflow (CFM) and duct connection options
• Plan the drain/condensate route and proper trap/slope
• Confirm service access for filter changes and coil cleaning

If RH remains high (or odors persist) after sealing leaks and improving ventilation, a whole-house dehumidifier is often the fastest path to stable comfort. In many cases, pairing a dehumidifier with controlled ventilation improves results.

Pro tip: Don’t fight humidity with thermostat setpoint alone. Overcooling wastes energy. A dehumidifier targets moisture directly—often improving comfort at higher thermostat settings.