The HydroPower 16 is the perfect, stress-free replacement you will start reaping the benefits from, immediately. The Bosch HydroPower 16 only heats water when you need it. With a 5-star energy rating and the ability to adjust temperature and water flow, this unit is as eco-conscious as it gets. Enjoy a constant 16L per minute of steamy hot water. Bosch’s automatic hydropower ignition heats the water as it flows to you – without the need for costly electric power.