Mechanical Ventilation System For Basement - There are numerous ways to help avoid moisture damage issues in a cellar. The first rule of thumb is no dirt basements. Though these are somewhat less common in this day in age, it is good to point out that dirt floors not only hold a large amount of moisture but can also give off a variety of gases. When constructing a cellar, make sure you've got a floor drain with a trap installed at the bottom point of the floor.
With no floor drain, any water that's spilled inside cannot escape. Sump pumps are usually used where flood because of a high water table might be a issue. Additionally, waterproof the exterior of the foundation walls and install a perimeter drainage system. An often overlooked problem in basements is moisture that comes from humidity.
The simplest way to control humidity would be to exhaust water vapor produced in the home to the exterior. Signs of high humidity comprise condensation on windows, pipes or other surfaces as well an overall sense of moisture in the air, dampness, and smells. Often, the humidity is going to be brought on by exposing the cellar to external air (open windows), having wet laundry hung to dry in the cellar, keeping firewood in the cellar, and/or a drier vent that exhausts inside.
In summer, use a portable air conditioner or air conditioning to reduce humidity. In hot, humid weather, keep cellar windows shut. The real key to maintaining basement humidity low would be to keep them well ventilated and to keep additional moisture from the cellar.