Ltpgtthis kfr 37ciw inverter ceiling cassette air conditioner comprises two elements an internal and an external unit the internal unit is fitted into the ceiling in the room to be cooled whilst the external unit is situated outside the buildingltbr gtltbr gtthe two are connected using a copper pipe the external unit or condenser removes the heat from the room and dissipates it outside along with any condensation thats built up in the system whilst the internal unit prov