How does a combination boiler provide hot water?

A combination boiler, commonly referred to as a combi boiler, operates by utilizing a heat exchanger to supply both heating and hot water on demand. This means that when you turn on the hot water tap, cold water enters the boiler and is heated immediately by the heat exchanger using the heat generated by the boiler's burner. Because of this design, a combi boiler does not require a separate hot water storage tank, allowing for more efficient use of space and energy.

The on-demand heating capability ensures that you have hot water whenever you need it, without any delay or the need for supplementary storage, which is particularly beneficial in smaller homes or apartments where space is limited. This efficient heating method minimizes heat loss since water is heated as it flows through the system, optimizing energy use compared to traditional systems that rely on stored hot water.

Understanding this function highlights how combination boilers are designed for efficiency and convenience, catering to the needs of modern households that require immediate access to hot water without the complications of storage tanks.