A continuous flow hot water system, also known as instantaneous systems or tankless water heaters, is a type of water heating system that heats water on demand instead of storing it in a tank. As the name suggests, continuous flow systems have a constant supply of hot water, meaning you’ll never have to worry about running out.
How do they work? Continuous flow hot water systems heat water as it passes through a heat exchanger. They can be powered by gas or electricity and the size of the unit will determine how much hot water it can generate per minute.