Packaged air-to-air air conditioning units, designed and manufactured to work in industrial environments, in presence of dust, vibrations and high temperature. ACU-P Series conditioners have been designed to cool crane control cabins: every component has been designed, selected and placed to satisfy all the needs of control cabins, to simplify the access to the internal parts and to minimize the maintenance. The units must be wall-mountaing externaly; the air is taken from and sent to the cabin to be cooled through the openings present on the conditioner’s internal side. The conditioners are provided with a control panel which allows the setting of the temperature and of other parameters. The conditioners can be provided with a COES device which guarantees the working continuity also in case of short temperature peaks up to 80°C; in addiction they can be supplied with an electrical heater for warming the cabin, allowing to work properly up to external temperature of -40°C.