Surprisingly simple design, actually. The water sits in a large tank with plenty of room to expand and contract. Pipes filled with refrigerant run inside the ta

Surprisingly simple design, actually. The water sits in a large tank with plenty of room to expand and contract. Pipes filled with refrigerant run inside the tank. Here’s a photo: https://images.app.goo.gl/Td6RdFbuVE8QJAmu6 https://images.app.goo.gl/Td6RdFbuVE8QJAmu6