The outdoor units of Haier's MULTI SPLIT air-conditioning system are compact and efficient units that run on environmentally friendly R32 refrigerant. The MULTI SPLIT system allows up to five indoor units to be connected to one outdoor unit. This is ideal for detached houses or flats where several rooms are to be air conditioned. MULTI SPLIT air conditioning makes it possible to cool several rooms at the same time. The MULTI SPLIT system saves on the installation space required for the outdoor units and saves energy. The inverter technology used in MULTI SPLIT air-conditioning means that each indoor unit can operate at different parameters.