A combination boiler, also known as a combi boiler, is a type of boiler that combines both the heating and hot water production in one unit. This type of boiler is very efficient and is a great choice for those who want to save space and energy. The combi boiler works by taking cold water from the mains and heating it up as it passes through a heat exchanger. The hot water is then stored in a hot water cylinder, ready to be used when needed. The combination boiler is a great choice for those who want to reduce their energy bills, as it is more efficient than other types of boilers. It is also ideal for those who want to save space, as it eliminates the need for a hot water tank. Additionally, the combination boiler is easy to install and maintain, making it a great choice for those who want to save time and money.