Match zones and indoor-unit positions to rooms
The number of indoor units should follow the rooms to be served and the way those rooms connect, rather than a generic room count. A converted attic, garage room, or addition may have different exposure and layout from the main living area. Position affects how air reaches the space and where occupants may notice drafts or noise. Recording room dimensions, use, and barriers helps compare a single-zone layout with a multi-zone proposal.
