In the summer, when there is no air conditioning in the upper levels, the warmer air flows downstairs raising the temperature, which lowers the relative humidity and raises the dew point resulting in less condensation. When there is air conditioning upstairs, the natural dehumidifying properties of the conditioned air comes down and lowers the relative humidity. The downstairs is drier, warmer and without any basement odor.
In the winter heating season, water will condense on windows and walls because the moisture inside hits a cold surface. After the WAVE ventilation is operational, the moisture upstairs, flows downwards and the windows dry up. The unit raises the temperature downstairs and draws out saturated moisture in the structure. The drier air is easier to heat than the heavy moist air, thereby saving money in heating bills. Also, heat loss is minimal because cold air is always at the floor level. In the winter the unit will generally operate at a lower speed due to the fact that heat evaporates indoor moisture.
Posted in: Ventilation