The living room showing the large windows and amount of light. Though it is an earth sheltered home there is no sense of being in anything other than an ordinary house.
Every room has a ceiling fan that runs 24/7. They keep the temperature even and prevent any stagnant air that could cause mold. We have had absolutely no problems with humidity in the house, and are able to maintain 50% or less in the house all the time. This particular fan is an exceptionally efficient design from the U of FL. It uses about 40% less energy than the normal fan and can move prodigious amounts of air. It is actually an industrial model fan available very inexpensively at Home Depot. We have 3 of them in the house.