Moisture
Whether it's from standing water after a rainstorm or just the dirt floor, evaporating moisture can damage wood and insulation and eventually make its way into your home
Moisture
Mold in the crawl space and upstairs living areas is a common problem caused by excess moisture.
Mold
Mold can grow on dirt, insulation, framing and even under your carpet on the first floor. Mold destroys organic materials as it feeds on them. Mold reproduces by producing millions of floating airborne spores, which some people are very sensitive to.
Ducts in the crawl space
If the ducting for your HVAC system is running through the crawl space, it acts as a highway, carrying all the dust, moisture, rodent droppings, and chemicals from the crawl space directly into your living space and your air.