Transformer breathers are an economical and efficient solution to control moisture levels during changes in the cooling medium or airspace caused by temperature gradients. Ensure transformers’ efficiency and proper functioning by maintaining a low humidity level within the equipment. Breathers are filled with self-indicating silica gel desiccant that changes from orange/yellow to green when saturated, indicating the need for replacement. By controlling the moisture level, deterioration of the cooling medium’s insulation properties can be prevented, thus avoiding malfunctions or failures of the equipment.