M · Glossary
Mini-split
Also known as mini split, ductless mini-split
A mini-split is a fixed split AC or air-to-air heat-pump arrangement with an outdoor unit and one or more indoor units.
A mini-split is a fixed air-to-air system in which refrigerant pipework connects an outdoor unit to one or more indoor units. Reversible equipment can provide heating and cooling. The term can describe a single-split or multi-split system.
Category
Air conditioning
Applies to
Heat pumps & AC
Last reviewed
28 Jul 2026