A passive solar heating feature whereby a glass panel is built on the south side of a building As sunlight passes through glass or other glazing, it warms the sunspace Proper ventilation allows the heat to circulate into the building
A room that faces south, or a small structure attached to the south side of a house
Passive solar energy system sometimes also referred to as an isolated gain system, where sunlight is collected and stored in a space separate from the living space, and must be transferred there either by natural convection or by fans The room faces south in the Northern Hemisphere and faces north in the Southern Hemisphere