A system boiler has all the major components of the heating and hot water system, including the pump and expansion vessel, built in. The boiler heats up water in a sealed hot water cylinder, usually found in the airing cupboard, for hot water taps around the home.
System boilers provide a high flow rate of hot water to deliver quick filling baths or powerful showers, thanks to the in-built pump, without the water running cold elsewhere in the house. They are compatible with unvented hot water storage cylinders, such as our range of Baxi cylinders and Megaflo Eco.