The most common recent-built-housing in southern Spain could be classified into three typologies:

• Multi-family building with six 60-square-mettered apartments

• Single-family 120-square-mettered terraced house

• Single-family 400-square-mettered detached house

There are many differences between the three housing typologies listed. From the point of view of cooling, the most remarkable differences are those related to the simultaneousness factor and the level of comfort required in each one.

1.1. Traditional cooling technologies

Up to now, the domestic systems most frequently installed in Spain have been mono or multi-split mechanical vapour compression systems, due to its modularity, price and technical development. Other solutions, such as centralized chillers, have been used for large-surfaced housings, but are not very common for domestic purposes.