The best way to shade the house is by stopping the rays of the sun from hitting the house surface, especially glass surfaces. Exterior shades are the answer. Interior shades are not very effective because they do not stop the conversion of light energy into heat energy, a process which occurs when light hits solid surfaces e.g. glass. Shading along the South side of a building can be in the form of an awning since the angle of the sun is relatively high when the sun is located in the Southern horizon. Exterior shades are required at east and west facing windows. Awnings do not work as well at East and West facing windows due to the very low morning and afternoon sun angles.

Air Conditioning