A dehumidifier is a household appliance that has the task of reducing the level of humidity in the air. Then usually used for reasons of hygiene, as a humidity which is too high leads to the formation of mould, and consequently may entail risks for the health. But air that is too dry is not an optimal condition for the health,since it would lead to dehydration, for this reason, the dehumidifier is that the home environment is habitable, and precisely brings the humidity is between 30% to 50%.