Charter Gas Services

Heating systems

The most common components of a central heating system are:

  • Boiler - heats water in a closed water system
  • Pump - circulates the water in a closed water system
  • Radiators - wall-mounted panels through which the heated water passes in order to release heat into the house
  • Hot water cylinder - stores hot water for baths and showers

Central Heating

There are three different types of high efficiency condensing boilers:

Combination (Combi)

Valliant Boiler


Valliant Boiler


A regular boiler is often also referred to as a 'traditional' or 'conventional' boiler. Each type of boiler delivers all the benefits of high efficiency technology, but which one is right for you will depend on several factors, including your property and your lifestyle.


Suitable system or type

  1. You want to use your loft space for a room conversion or other purposes: Combi or System
  2. You live in a flat or bungalow (i.e. you have very little space or no roof space): Combi or System
  3. Your home has more than two bathrooms: Regular or System
  4. Your mains water pressure is low: Regular or System
  5. The number of people in your home means that there is regular demand for hot water on tap, but waiting for the cylinder to constantly heat up is, or would be, inconvenient: Combi
  6. You want to replace an old boiler to improve an existing conventional central heating system: System or Regular

Our central heating specialists will help you design your system and make sure it's the right one for your home.

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