Decorative Crawl Space Vent

Decorative crawlspace fans look nice but block off some of the airflow in the crawlspace. You would need to add additional crawlspace vents if you use decorative vents like the one in the picture above.

More vents, the more air, less moisture. Keep as much moisture out of your crawlspace as possible. Don't go overboard when installing crawlspace vents because they weaken the structure of the house.