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Heating and Air Conditioning

What You Need To Know Before Buying A Replacement Boiler

Like most things your boiler is an important factor that needs to be replaced eventually.  A new boiler can be a big investment in your home, so you want to make sure you research everything carefully first.  It is not just a case of a new one there are a few things you need to know before buying a replacement boiler.

Most homes in the UK have a gas heating system with a gas boiler.  Although there are alternatives to this too.  These could be an oil boiler, LPG boiler, liquid petroleum gas or wood burning stove which is fitted with a back boiler.  Which one you choose is dependent on what your home already has, or which is preferred for your needs.

The best person to ask which boiler is best for your home is your boiler engineer.  Ask them which ones they install the most and which are the more reliable.  Also find out if parts are expensive once you have the boiler installed as this may change your decision on which boiler to choose from.

Types Of Boilers

The types of gas boilers you can choose from are, (combi) combination boiler, system boiler, heat only boiler.  You should check with your heating engineer for their recommendation which system is best for your home.

All modern boilers nowadays are fitted with condensing boilers.  But there are different systems such as combination, system and conventional.  What is right for you and your home will depend on a few factors.  Such as, how many people you have in your house, how many bathrooms you have, your capacity for locating a water tank in the roof and space for a hot water tank.  All these factors and the overall efficiency of the system need to be taken into consideration.

If you are considering using a solar water heating to help reduce your overall energy bills for your home, make sure you mention this to the person preparing your quote as the hot water tank will need to accommodate this change.


According to Andy from HomeGlow Gas Services “Check the efficiency rating of the boiler.  Your suppliers of the boiler should be able to tell you the percentage efficiency rating.  There is also a boiler efficiency database where you can check too.”

Ask your boiler engineer if your boiler controls are compatible with your new boiler or do you need to replace these too.  If they are quite old if you replace them they could also help the efficiency of the boiler.


Warranty is something you need to ask your boiler engineer about.  What comes with the new boiler and what guarantees on the entire installation, including pipework and other plumbing that may be necessary.  Do any warranties include parts and labour? These are all questions which should be asked before you decide on a boiler.

When you buy your new boiler, you will want to go with a reputable company.  Trustworthiness and dependability are the most important factors that will influence which boiler you buy for your home.