This disclosure discloses a communication implementation method and device for air conditioning units, a storage medium and a processor. The method includes: acquiring a channel state of a current power line carrier channel used between units in an air conditioning system; and determining whether to switch the channel between the units from the current power carrier channel to a next power carrier channel according to the channel state, wherein the next power carrier channel is any one of power carrier channels other than the current power carrier channel in the air conditioning system.