M · Glossary
Multi-split system
Also known as multi split
A multi-split system connects several compatible indoor AC units to one outdoor unit.
A multi-split system is a fixed AC or air-to-air heat-pump arrangement in which several permitted indoor units share one compatible outdoor unit. Manufacturer combination data sets the connected-unit rules, available capacity and operating restrictions.
Category
Air conditioning
Applies to
Heat pumps & AC
Last reviewed
28 Jul 2026