Hospital on French island of Tahiti uses seawater for air conditioning From the depths of the Pacific Ocean comes an innovation in air conditioning that's good for the planet and saves money. Located just 200 metres from the ocean, the hospital in Papeete, on the French island of Tahiti, is using seawater to cool its facilities. The switch to this new system has decreased the hospital's energy consumption by 90 percent. Our France 2 colleagues report, with FRANCE 24's Lauren Bain.