282512 Air conditioning machines

28251220 Window or wall air conditioning systems, self-contained or split-systems 28251240 Air conditioning machines of a kind used in motor vehicles 28251250 Air conditioning machines with refrigeration unit (excluding those used in motor vehicles, self-contained or split-systems machines) 28251270 Air conditioning machines not containing a refrigeration unit/central station air handling units/ vav boxes and terminals, constant volume units and fan coil units