Cool or heat multiple rooms from a single outdoor unit, without the roof space or budget a full ducted system needs.
ARC Licensed · Perth MetroA multi head split system connects two or more indoor units to a single outdoor condenser, rather than needing a separate outdoor unit for every room. Each indoor head runs independently, so you can heat one room while cooling another, or leave rooms not in use switched off entirely.
Each indoor head has its own remote and runs independently of the others, which is a simpler form of zoning than a ducted system. You are not paying to run every room at once, since unused rooms can just be switched off. The trade off is that airflow in each room comes from that room's own indoor unit rather than a hidden ceiling duct, so the indoor units are visible in each space.
Ducted systems hide everything in the ceiling and distribute air through outlets, giving a cleaner look with no visible indoor units, but they need enough roof space to run ducting and come at a higher upfront cost. Multi head systems are quicker to install, cost less, and do not require roof access, but each room has a visible indoor unit on the wall or ceiling. For a lot of homes, particularly those built without ducted friendly roof space, multi head ends up being the more practical option, not just the cheaper one.
This depends on the outdoor unit's capacity, but most residential multi head systems run between two and five indoor units off one outdoor condenser. We size the outdoor unit to the combined load of all the rooms being conditioned, not just the number of heads, so performance does not suffer when multiple rooms are running at once.
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