Mold: Install a Dehumidifier
A maintained, properly installed, correctly programmed, self-draining dehumidifier improves indoor air quality, reduces musty basement odors, and prevents indoor mold growth.
Helpful Hints for Dehumidifier Installation
Determine the square footage of the entire area to be dehumidified and select an appropriately sized unit.
Select a unit with a programmable humidistat. Set the unit’s humidistat between 30% - 60% RH. In very damp locations, chose a setting closer to 50% to prevent the unit from “freezing up” from continuous operation.
Position the dehumidifier in the lowest level of the building. Humid air is heavier than dry air and will tend to accumulate in lower-lying areas.
Install a self-draining unit. This can be a gravity-drain discharge directly into a nearby HVAC condensate pump, sump, or drain. If gravity is not on your side, an external condensate pump can be added. Another option is to purchase a unit with a built-in pump to discharge water to a slop sink or up-gradient drain.
Check the electrical restrictions of the unit if using an extension cord. Overloading the capacity can cause a fire hazard.
If possible, protect the unit from direct exposure to water or damp soil. Do not place the unit in any standing water.
If installing in a crawlspace susceptible to water infiltration or damp soil, consider hanging the unit from the joists.
Maintain and replace the unit as needed. ALL dehumidifier REQUIRE regular maintenance and cleaning, Read the owners manual for maintenance recommendations. Most big-box store dehumidifiers need to be replaced every 3-5 years.