Abstract: A breathing type storage housing is exposed night and day to fluxuating outdoor air temperature. The housing defines a substantially sealed container of air that is alternately warmed and cooled by heat transferred through the housing due to daytime solar warming and nighttime cooling of the housing. Pressure responsive valves connect the container to the outside of the housing and are operable in response to temperature and pressure fluxuations inside the container for exhalation of warmed air from the container and for inhalation of cooled air into the container from outside the housing. Cooling of the air inside the container is purposely retarded whereby the operation of the valve for connecting the container to the outside of the housing for inhalation is delayed until the outdoor air temperature has decreased sufficiently to condense water vapor out of the outside air.