How to Dehumidify a Crawl Space

A damp crawl space can lead to mold growth, pest infestation and even damage to your home. One way to ensure that the moisture in a humid crawl space is taken care of is to dehumidify the room: a simple task that won't take much time, but might cost you a bit of money.

  1. Use towels to dry up any moisture in the crawl space to the best of your ability. If there isn't any moisture, condensation or puddles that can be picked up, move on to the next step.

  2. Place a dehumidifier in your crawl space. Plug it in and turn it on. You can find a dehumidifier at any general store or home maintenance stores such as Lowe's or Home Depot.

  3. Allow the dehumidifier to run continuously, checking regularly to empty the water dish if it has one. As a dehumidifier absorbs the water from the air, it collects it into an internal compartment that must be drained.

  4. Tip

    Install heating in your crawl space and insulate the room to help prevent it from growing too moist or humid in the future.


    Some dehumidifiers can be bulky and might weigh a lot. Ask for help if getting the dehumidifier into your crawl space is too daunting of a task for one person.