If I want multiple RCACs, can I have just 1 outdoor unit or do I need multiple outdoor units?

If I want multiple RCACs, can I have just 1 outdoor unit or do I need multiple outdoor units?

Yes. A multi-split system will have multiple indoor air outlets + single outdoor compressor unit on ground, this would be ideal for 2-3 adjacent rooms. However, these type of units are less efficient.
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