The main priority when drying surfaces consists in reducing the cause of a water damage as quickly as possible and thus reduce the costs. By using refrigerant type driers we remove the moisture from walls, floors and insulations and thus prevent subsequent damages to furniture and stored goods. We use fans and ventilators to support the refrigerant type driers, circulate the air volume several times per hour in order to dehumidify the entire area of the construction which is close to the surface.