Mini split-system HVAC systems (mini-splits) with no ducts have many potential applications in residential, commercial, and institutional buildings. Most are used in multifamily housing or as retrofit additions to homes with non-ducted heating systems such as hydronic. Ductless mini-split HVAC systems are also an option for room additions, and small apartments where extending or installing distribution ductwork for a central air conditioner is not feasible. Like central systems, mini-splits have two major components: an outdoor compressor/condenser and an indoor air-handling unit.
