The majority of the excess humidity present in the garage comes from lack of ventilation and vehicles bringing in water or snow from the road.
We install the Garage low to the ground because this is where the highest level of relative humidity is present.
By adding ventilation to the garage, the unit helps the water and snow evaporate faster and by doing so at a lower level, this also helps remove any stagnant air that has been present (Which is typically colder and with a higher relative humidity).