Combi Boilers

Combination Boilers (or Combi Boilers) provide both hot water to a sealed heating system and a seperate supply of instant hot water directly to taps, bathsand showers. Combi Boilers inevitably have both positive and negative attributes.

Combination Boiler Advantages.

Ease of installation. Combination Boilers generally require less time when installing. This is because there are no tanks or pipes in the loft space.

  • Space Saving. Combination Boilers save space, particularly useful in smaller properties. This is becauseCombi Boilers do not require a hot-water storagecylinder.
  • Economy. Combination Boilers only heat thewater that you use. 
  • Instant Hot Water. Combination Boilers heat water instantaneously – no waiting for the immersion heater to warm the cylinder. 
  • Combination Boiler Disadvantages.
  • Slower Flow Rate. Combination Boilers generally have a slower hot water flow rate. Therefore filling a bath may be slower thanyou are used to.

In conclusion. Traditionally Combi Boilers were best suited to smaller properties, flats or small houses. However, the new generation Combi Boilers have considerably higher flow rates than some of their predecessors, including Combi Boilers now with built-in hot-water storage.


Plumbing Heating Boilers Drainage
Darren Sherwood  - Plumbing, Heating and Drainage Engineers