By having lots of windows facing south, you are enabling your home to capture optimal solar heat.
Once the heat is captured, it must be absorbed. Brick walls or slab floors covered in tile (an exposed surface) work their magic by absorbing the natural energy.
Then "thermal mass" is what stores the energy. These are the materials below the surface.
Next, the solar heat must be distributed to other areas of the home. Many homeowners choose to use ductwork, vents, and fans.
And finally, the home must work to minimize heat during the super hot summer months. This can be done through awnings, fans, and shades. As Your Westchester County Buyers Agent I can assist you in understanding more about this green feature and many others.