Basements are especially prone to dampness, musty smells, and lingering humidity. While a portable dehumidifier won't solve serious leaks or water infiltration, the right model can make the space more comfortable and help protect furniture, stored belongings, and finished surfaces.

We've tested over 20 dehumidifiers, and below are our recommendations for the best dehumidifiers for basements. Here's a quick guide to what matters most using the results from our lab testing:

• Capacity: A 50-pint model is the better choice for large or consistently damp basements, since the added capacity means less frequent tank emptying. Small to medium spaces are usually well served by a 35-pint unit, while compact rooms, workshops, or storage areas typically only need a smaller model.
• Airflow: Higher fan speeds are useful for circulating air through large or open basements. In finished spaces where noise is a concern, lower settings are preferable. A unit with a wide range of fan speeds offers more flexibility, allowing you to adjust as conditions change throughout the year.
• Drainage: If a floor drain is nearby, a drain hose offers a simple, low-maintenance solution. Without one, a built-in pump is a practical alternative, since it can move water upward to a utility sink. If manual emptying is unavoidable, choose a model with a tank or bucket that's easy to grip and carry once full.