Our crawl space vent minimizes potential wood decay to your home's foundation. This in turn will decrease wood rot in your crawl spaces and moisture problems in the living area of your home. In addition, the constant air circulation will vent other gases, such as those formed from residues in termite treatment, treated wood, and radon gases.

Quiet 110 Cfm Ball Bearing Motor   Super Tough Polypropylene Construction   Dries Crawlspace Gradually   Humidity Sensor For Worry Free Operation   Thermostat Shuts Fan Off At Low Temperatures   U.L. Approved Means Assured Safety

Can Help Stop Mold Growth   Upgrades Your Present Foundation Vent   Easy Installation In A Variety Of Constructions   Mounts Behind Foundation Vent For Invisible Operation   Quick And Simple Solution For Under-Ventilated Crawlspaces   One Year Limited Warranty

Crawl Space Vent Size Needed

To aid natural crawlspace ventilation, mechanical ventilation should exchange the crawlspace air at least four times an hour. To determine this, multiply the square footage of the crawlspace by the height to calculate the cubic feet then divide by 15 to determine the CFM needed to properly ventilate your crawl space.

Crawl Space Vent Formula

Length x width x height = total cubic feet of crawl space
Divide = total cubic feet of crawl space / 15 = CFM needed for proper foundation ventilation.

Example:
40' x 40' x 2' crawl space = 3200 cubic feet of area
divide 3200 cubic feet by 15 = 213 cubic feet per minute (cfm) of air flow needed to ventilate your crawl space

This Crawl Space Ventilator is rated At 110 cfm for each unit. Therefore, 2 units would be required to properly ventilate a crawl space of this size. As with all powered exhaust systems, proper intake air vents should be used. Generally, one air intake vent is recommended as a minimum for air intake. Having 3-4 intake vents would be ideal. These crawl space ventilators should be installed on opposite ends of the intake vents, to allow air movement across the entire space to be ventilated..

Crawl Space Vent Is Less-Expensive Solution

Excessive moisture in your foundation, due to poor ventilation may make your home susceptible to an increase in mold, mildew, wood rot and pest/insect infestation.
 

Our powered crawl space vent creates a powered ventilation system for crawlspaces that can be utilized in both old and new construction. The foundation vent fan is designed to be mounted behind any new or existing crawlspace vent. Its operation is controlled with a temperature switch/humidistat control which activates the motor at or above 50ºF and is user adjustable for the varying levels of relative humidity in your crawlspace.
 

By incorporating the crawlspace ventilation into your homes crawlspace ventilation system, you can help stop mold growth, mildew, rot, pest /insect infestation and decrease high humidity levels while increasing the overall airflow within your foundation.