NOVELTY - The apparatus has a partially visually clear highly-radiant heat-absorbing material spaced from and parallel to an inside surface of a glass panel arranged in a wall or a door to form a plenum (20). A distributing fan (30) directs air over the material to absorb heat from the plenum. The apparatus forecasts an anticipated change in temperature using a brightness sensor, and the anticipated change in temperature is unpredictable by a temperature sensor. The apparatus modifies the operation of the fan in response to the temperature in the plenum and the anticipated change in temperature.    USE - Solar heating and distribution apparatus for circulating heated air to a living space.    ADVANTAGE - The apparatus has a partially visually clear highly-radiant heat-absorbing material which allows a user to see through a heat absorbing member. The apparatus uses very little outside fuel-supplied energy. The apparatus provides a simple, unobtrusive, and economical way for accumulating and distributing solar heat from windows and doors while reducing hot and cold spots. The apparatus achieves 25-30 percentage reduction in main heating by increasing the glass area of windows and doors, without causing overheating, overbrightness, and discomfort associated with overglazing. The apparatus functions automatically without requiring manual intervention. The windows and doors need not be screened or do not require sensing elements, and greater comfort is provided by mixing sunlight radiant heat and warm air distributed locally from window and door areas at low levels, thus improving the floor-to-ceiling temperature gradient. The apparatus reduces brightness and hot and cold spots while distributing heat more efficiently without or with minimal over glazing. The apparatus automatically controls additional heat required above solar heat when solar input is low.    DESCRIPTION OF DRAWING(S) - The drawing shows a side sectional view of an air circulation section.    Glass window (12)    Plenum (20)    Distributing fan (30)    Living space (40)    Channel (42)