Pioneer newest ways series wall mount mini split ductless Inverter air conditioning and heat pump system. Full system set, containing indoor section, outdoor section, remote controller and standard installation accessories. With a Pioneer ductless mini split type air conditioning system, it is possible to heat or cool any contiguous area, quietly, effectively and efficiently. Pioneer brand WYS series ductless split heat pump systems come in a range of capacities; from 9000 BTU/hour to 36000 BTU/hour.