Poorly ventilated floor and crawl spaces are all too common.

Underfloor ventilation is often not required where natural air flow is adequate, but often this air flow must be forced. The most common type of system draws air out of this area forcing dry air in to replace it and the cycle continues.

A professional underfloor fan is almost silent and is extremely cheap to run & can be coupled with a timed circuit to prevent operation during the morning dew/moist times of the day. It is a very effective way to eliminate the issue of moist conditions under the average home.