Are there Problems with Moisture and Dampness in a Tightly Sealed House?
Moisture will accumulate inside a house as a result of washing, cooking, showers, transmission of vapour through the walls and conduction of damp air into the house through gaps, etc.. With air conditioning the moisture level will be controlled because the air conditioner extracts the moisture and condenses it at the evaporator coil. When the house is being heated, the moisture level will be controlled by the fact that as air is heated, its relative humidity (moisture) decreases. Moisture can accumulate inside a tightly sealed house that is not heated or air-conditioned if the windows are kept closed for many days. This will rarely be a concern, but opening a vent at the top of the domes cupola, supplying a little heat to dry the air or briefly running the air conditioner, can control it. Here we like to point out that a fresh air heat exchanger is not required in our dome to control moisture, but it could be desirable for the removal of stale air.
