Types of boilers explained

There are three main types of condensing gas boilers: combi boilers, system boilers and conventional boilers (also called traditional, regular boilers, open vent or heat only boilers).

Before deciding which of these boiler system to proceed with you should always consider:
     The size of the property & and planned extensions
     The current boiler type & pipework in your property
     The number of showers & the number of bathrooms
     The area’s water pressure
     The type of property
     If the boiler needs to be solar compatible

Each type of condensing boiler has a range of unique properties to suit these requirements.

To help provide you with some insight into which boiler replacement option is the most practical choice for your own home take a look at our guide below. We share how each boiler type works, their advantages and what kind of homes they work best in

System Boilers

House Layout Diagram

A System boiler directly heats your central heating system and produces hot water for a storage cylinder. 

The ideal solution for busy or large households with two or more bathrooms. They are very similar to conventional boilers (Regular boilers) that need to store hot water, however these boilers take their water supply directly from the mains.


Ideal for Homes with Multiple Bathrooms

System Boilers can supply a constant demand of hot water to multiple taps at the same time making them ideal for larger homes.


No Cold-Water Feed Tank

Any worries for frost damage and leaks are eliminated as there is no need for a cold-water feed tank with a system boiler ultimately freeing up space. 


Compatible with Solar Water Heating Systems

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


Built-in Components

Most of the components needed for a heating system are already built into a system boiler. This makes installation quicker and simpler.