Do-It-Yourself Crawlspace Drying

Place the vacuum of a sump pump into the submerged portion of your crawlspace. Place your sump pump's hose in a bucket and hold it steady as it pours pumped water into the bucket. Plug in the sump pump and turn it on. Continue to pump until you begin pulling more air than water. You will know that this is happening when the pitch of the pump's engine becomes markedly higher. Turn off the pump immediately after hearing this rise in pitch.

Remove the sump pump from the vicinity of the crawlspace. Place a towel in the crawlspace. Place a space heater on the towel. Turn the space heater to its highest heat setting. Plug the space heater into a nearby outlet.

Let the space heater run overnight. The heat it emits should dry out any water remaining in the crawlspace.

Inspect the dry crawl space for mold. Even if you cannot see any mold, spray fungicide on all exposed surfaces of the crawlspace as a precaution. Wear a mask while spraying.

Let the fungicide stand for an hour. Rub down the sprayed surfaces of the crawlspace with a rag lightly dampened with soap and water. This will remove fungicide odor. Dry all exposed surfaces with a dry rag.