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 Choosing the right boiler







When choosing a boiler for your home it’s important to choose the right make and model, this is an expense that you only want to take every 15 years or so.  If you buy a cheap brand you could end up having to buy a new boiler in 5 years time.

A combi boiler is the most common type of boiler that you will find in most homes, the reason for this is that they give instant heating and hot water when you need it and saves a lot on gas bills as it saves heating a hot water cylinder for your hot water.



Combi boilers


  • Instant hot water when you need it
  • Saves on gas energy bills
  • over 90 % efficient energy
  • Not hot water cylinder, or cold water tank in the loft

If you have two showers, or two bathrooms you may need a hot water cylinder as the pressure will be greatly reduced if the shower or baths are being used at the same time.


Almost any home, but best for homes where lots of people won’t need lots of hot water at the same time.


System boilers


System boilers – these have an expansion vessel fitted inside the boiler so no header tank is required in the loft.  This is more often than not done as a sealed system

  • there’s no need for a tank in your loft.
  • Pressure is run off the mains
  • the hot water needs to be done through a cylinder
  • if the hot water runs out it will need to be heated again through the boiler
  • the hot water cylinder will need to be installed in an airing cupboard

Larger homes where hot water is needed from different bathrooms


Conventional boilers

Conventional boilers – these are the old types of system which are slowly being removed with combi or sealed system boiler

Hot water can be drawn from several bathrooms

  • Once the hot water has gone, it will need to be reheated
  • More space needed for a hot water cylinder

Larger homes with two bathrooms

Condensing boilers

All the new boilers are condensing boilers.  The gases are used twice before expelling through the flue.  This is why they are much more efficient now.  A liquid is produced from this procedure which is why you need a drain to put the pipework into.

It is now illegal to install a boiler which is not condensing.