Which feature in multi split systems allows separate cooling for different areas?

In multi split systems, the presence of multiple evaporators is a key feature that facilitates separate cooling for different areas. Each evaporator can be installed in distinct rooms or zones, allowing for individualized temperature control. This means that occupants in different areas can set their desired cooling levels without affecting the temperature settings of other spaces.

This capability is particularly important in larger buildings or homes with varied cooling needs, as it leads to increased energy efficiency and enhanced comfort. Each evaporator can respond independently to the cooling demands of its respective area, which can lead to energy savings as the system operates more efficiently by only cooling specific areas as needed.

The other options, while related to overall system performance, do not provide the same level of zoning flexibility that multiple evaporators do. Single compressor designs typically support a single zone or cooling load, variable speed fan control affects airflow but does not control temperature zones, and ducted air delivery systems may distribute air throughout the building but do not inherently provide independent control for different areas without additional zoning technology.