The cooling load of all-air systems is restricted. When the cooling load is more than 40 W/m² choose a minimal ventilation rate and a secondary cooling system for additional cooling. In the following graph the cooling load of all-air systems is plotted against the ventilation rate for different supply air temperatures. For reasons of comfort the supply air temperature should not exceed the room temperature minus 10 degrees.

In the table below a comparison is made of the cooling load between all-air systems and different types of air-water systems.