Condensation problems, burnt-out extractor fans due to overuse without rest time, inadequate air extraction flow, poorly executed and dangerous installations with exposed connections not in sealed junction boxes or with open junction boxes without covers—we have the solution. We calculate the amount of air needed to evacuate the humidity and install the necessary turbine for proper ventilation of the pool room. In addition, we replace the pool lights with LED bulbs, resulting in significant savings by going from three 300W bulbs to three 28W bulbs, and we also refurbish the installation.