Boilers Explained


Combi Boiler

A combi or combination boiler is both a central heating boiler and high efficiency water heater in a single compact unit.

Combi boilers heat the water from the mains directly when you turn on a tap, so there is no need for a hot water storage cylinder or a cold water storage tank in the loft.

A combi boiler is also very energy-efficient & cost-effective as water is heated instantly rather than heated and then stored in a cylinder until needed. An additional benefit is that hot water is delivered at mains pressure, which means your shower should be much more powerful without the need for a separate pump.


Regular Conventional Boiler

Regular boilers (or traditional, conventional or heat only boilers) are usually suited to homes that already have a traditional heating and hot water system, linked to a separate hot water cylinder.

These type of boilers also need a cold water storage tank in the roof space to feed the hot water cylinder, along with a tank that maintains the water level of the central heating system.

This type of boiler may be the best option for replacing an existing boiler if the property has an older type radiator system, as it might not be able to cope with the higher water pressure that is delivered by a system or combi boiler.


System Boiler

System boilers require a cylinder for storing hot water, however the major components for the heating and hot water system are built into the boiler itself, making it easier & quicker to install.

In addition, there is no need for a tank in the roof space with this type of boiler, so it can be an option in a home with very little or no loft space, or where the space maybe used later for a conversion.

System boilers are also compatible with solar water heating systems, which deliver lower energy bills as well as environmental benefits.