Combi (short for combination) boilers contain everything needed to heat your radiators and deliver hot water to your taps in one compact unit, saving valuable space in the home as there is no need for a hot water cylinder or water tanks in the loft.
A combi boiler heats water instantly when you turn on a hot tap. The water comes straight from the mains, so the flow rate at the tap is usually very good. And because it only heats the water you need, when you need it, it is extremely energy efficient.
