The Rinnai 400L 4.8kw Hotflo Electric Hard Water Twin Element Storage System is a reliable and efficient water heating solution. With its twin element design, this system ensures that water is heated quickly and effectively. The vitreous enamel lined steel cylinder stores the water, while the twin thermostatically controlled heating elements ensure precise temperature control. The bottom heating element heats the entire contents of the cylinder, while the top heating element, also known as the booster, kicks in during high demand periods to heat the upper portion of the water. This feature allows for optimal energy usage and ensures that you always have hot water when you need it. The system is designed to handle hard water, making it suitable for areas with high mineral content. With a generous capacity of 400L, this storage system is perfect for households with high water consumption. Whether you need hot water for bathing, washing dishes, or doing laundry, the Rinnai 400L 4.8kw Hotflo Electric Hard Water Twin Element Storage System is a reliable and efficient choice.