Crawl Space Dehumidifiers

A crawl space dehumidifier will manage moisture long-term, lower the relative humidity levels in closed spaces, increase the effectiveness of your home's HVAC by creating a controlled environment, and will discourage the nesting and infestation of pests in your crawl space. Schedule your free inspection to learn more about our deals and discounts on our crawl space dehumidifiers and installation services!

Moisture in the crawl space can be caused by:

Moisture in the crawl space can be caused by:

  • Humid air and moisture that penetrate through unsealed airways such as foundation vents, openings around pipes and wires in the foundation walls, and through the gap where your wood sill plate sits on top of the foundation. In addition to moisture, unwanted bugs and pests often find their way into the crawl space via the same openings.
  • Moisture levels are higher when there is standing water under the house either as a result of flooding, condensate build-up along HVAC systems, or poor foundation drainage in the crawl space. If there is any water pooling on top of your crawl space vapor moisture barrier, it is more than likely that there is moisture that is accumulating under your home.
  • An exposed ground floor in your crawl space where the plastic vapor barrier is providing no coverage, allows moisture to evaporate directly from the soil, that can raise the humidity in a crawl space dramatically. Having an exposed ground floor will leave your wood joists and structural beams under the home susceptible to mold growth and wood rot over time.
  • Condensate that accumulates along your air handler and duct work under the home. Condensation is often a result of high relative humidity levels in conjunction with contrasting outdoor and indoor air temperatures, which can lead to standing water and mold growth.

Having a dehumidifier can provide a number of different benefits to the air quality and environment in your home and crawl space. A dehumidifier will allow you to lower humidity levels to help protect from moisture that could lead to mold or wood rot. Reduces allergens like mold spores, dust mites, and mildew that can accrue in the crawl space and under your home. Additionally, it can keep wood moisture levels low to prevent your wood joists and beams from warping.

Other benefits include eliminating the condensation which occurs along air conditioning duct work in the crawl space as well as preventing rust on any metal surfaces. Ultimately, installing a dehumidifier help to eliminate odors and keep clean air flowing into your crawl space and home. Find out how adding a dehumidifier in your home will help protect your home and save you money down the road.

Unsealed crawl spaces and basements are exposed to high moisture and humidity which make them more susceptible to moisture and mold growth, structural damage, and even allergy issues due to poor air quality for people inside the home. Due to the Stack effect, the movement of air into and out of buildings and homes cycles the dusty air and spores from the crawl space throughout your home due to whats called air buoyancy.

Air buoyancy occurs due to a difference in indoor-to-outdoor air density resulting from temperature and moisture differences. In essence, the moisture and musty odors in your crawl space will always occur in your home, unless all the air spaces and openings in your floor are sealed, and there is a dehumidifier to manage and maintain safe moisture levels and air quality. If you suffer from allergies or asthma, the irritants in the air might affect you more harshly than someone who does not.