Explore the questions of thermal expansion tanks in our latest video! 🚰 Ever wondered about that big thing hanging on the water line? It's a thermal expansion tank, now a code requirement due to changes in water supply. We discuss the intricate workings of its rubber diaphragm, managing expanding water during heating cycles. 🌡️ Check out our in-depth video linked in the upper left-hand corner to understand why these devices are crucial in maintaining pressure during water heater operation. #HomeMaintenance #WaterHeater #DIYPlumbing