Multi-split air conditioning systems
By Airva Editorial · Reviewed by Airva Technical Review · Updated 13 July 2026
A multi-split system runs several indoor units from a single outdoor unit, letting you cool and heat multiple rooms while keeping just one condenser outside.
Why choose multi-split
- Fewer outdoor units — tidier and often easier to site than several separate splits.
- Independent control — each room's indoor unit can be set separately.
- Good for two to four rooms — a common sweet spot for family homes.
Trade-offs
Installation is more involved than a single split, and pipe runs to each room affect cost — see costs. For whole-home coverage you may also consider a ducted system.
The system finder suggests a likely fit for your rooms, or request an installer match.
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