Performing air sealing between individual living units is referred to as what?

The correct term for performing air sealing between individual living units is "compartmentalization." This process involves sealing off different areas within a building to limit air movement between those spaces, thereby improving energy efficiency and indoor air quality. By compartmentalizing living units, you can reduce the transfer of air (and potentially pollutants) between units, which is essential in multifamily housing scenarios where units are in close proximity.

Compartmentalization assists not only in minimizing energy loss but also in controlling humidity and reducing the risk of mold growth between spaces. It creates a more stable living environment for each resident, as well as better control over heating and cooling systems.

The other options refer to concepts not directly related to air sealing between living units. Unification suggests bringing spaces together rather than separating them, segregation implies a division that may have different connotations or contexts, and isolation often pertains to completely separating a unit from its environment rather than focusing on sealing between individual units within a building. Thus, compartmentalization is the most appropriate term for this specific task in multifamily building analysis.