The hoses of the monobloc air conditioners should not be extended, as this can damage the components in the unit, because these exhaust hoses are so short so that the heat generated in the unit can be blown out again quickly. Another reason why such hoses should not be extended is that they get very hot and heat up the room unnecessarily. It is better to place the unit in a location away from the sun and then transport the cool air into another room, e.g. using a room air circulator.