Combi’ is short for combination boiler. This type of boiler does two things, it heats water and provides central heating.
Combi boilers heat water as you draw it from the tap. They don’t need a water storage tank as the boiler is connected directly to the water mains, meaning it only heats water as and when it’s needed. If you are in need of hot water at any time without worry, a combi boiler will likely be the best choice for your home. Furthermore, the lack of a water storage tank means that you’ll save space in your home too.