Crawl Space Dehumidifier

Crawl Space Dehumidifier

The crawl space environment is governed by a number of factors that can affect the Relative Humidity (Rh).  Foundation ventilation holes allow outside air to ventilate the crawl space through passive ventilation.  In crawlspaces without foundation ventilation, the cause of high Rh values can be more difficult to assess.  In some cases, there is excess groundwater seeping through the foundation and causing evaporation of water vapor.  In other cases, a faulty drain field or sump pump might be directing an active water infiltration into the crawl space.

Why might I need a Crawl Space Dehumidifier?

• High RH readings with no opportunity to create additional passive ventilation.
• Insufficient ventilation resulting in condensation.
• Groundwater intrusion leading to wet soil conditions

What types of settings should be available on my Crawl Space Dehumidifier?

• Humidistat
• Thermostat