Regular or Combi Boiler

Regular boiler or gas combi boiler – what is the difference?

Most old gas boilers are regular boilers – this means they heat your water and store it in a separate hot water cylinder (usually in the airing cupboard).

A combi (combination) boiler heats water on demand and supplies it direct to your taps.

Both provide hot water to heat your radiators when activated by a programmer or controller.

A regular boiler is more efficient than a combi boiler at producing hot water in the first place, but then some heat is lost from the hot water cylinder.

Regular boiler or gas combi boiler – which is best for you?

How much hot water do you use?

A large family using lots of hot water could be better off with a regular boiler – a smaller household using less may be better off with a combi.

 Are you short of space?

  • Combi boilers dispense with the need for the hot water cylinder in the airing cupboard and other tanks in the loft needed by regular boilers and heating systems.
  • In a combi boiler all the major components are housed in one compact unit which usually sits in the kitchen or utility room, or perhaps the airing cupboard. This makes them  convenient to install and saving space for the householder.

A Combi boiler also delivers hot water to your taps or shower at mains pressure – so you can enjoy powerful showering without the need for a pump.

Are you thinking of installing solar water heating? Many combis are not compatible with solar water heating or cannot use it so effectively.