Studies have shown (one specifically through Advanced Energy) that you can save up to 15-20% if humidity is eliminated from your crawl space and home. Variables include how many stories your house is, if you have ducts in the crawl space, how big the crawl space is, etc.

Some crawl spaces have insulation in the floor above. This is mainly because the vents allow so much cold air in the winter that the floor needs insulation. Since insulation contains organic materials in the resin used to set the fibers, it is a prime breeding ground for mold. Even if it gets just a bit damp, the insulation loses all purpose. Heavy moisture burdened insulation hanging down from the sealing is a common sight in dirt crawl spaces.

In order to control the moisture in your crawl space, sealing up the crawl space vents is the first step. Secondly, separate the crawl space from the earth using a heavy puncture proof material like CleanSpace. This keep moisture and rot at bay. Finally use an energy efficient heavy duty dehumidifier (like the SaniDry) that will circulate the air and remove the humidity.

Taking these steps will bring you results that will make you wish you knew about the systems sooner. Odor removal, energy savings, and extra storage space make this project worthwhile.