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Buying a combi boiler

A combi boiler is one of the most efficient forms of heating. many independent assessments have demonstrated that a condensing combi boiler can help to reduce energy usage by up to 30%. This feeds through to a direct reduction in your monthly heating bill which, at the present time, will be a welcome assistance to many household budgets.

A conventional boiler will use approximately 60% of all the energy in your annual heating bill. Modern condensing combi boilers operate in a different manner to achieve their high energy savings and to be very efficient.

You may not be aware that a conventional boiler will output a large amount of heat, the waste exhaust. By exhaust we mean the gases that are expelled from your home into the atmosphere. This may be very pleasant for any external birds or squirrels but is not going to help you as your pound notes are essentially frittering out of the boiler flue into the atmosphere.

Being a form of condensing boiler, a combi boiler will extract this waste heat in the exhaust and use it in heating your home. There is a small by product of this “condensation” but there is no need to worry as it is harmless liquid water.

This is possible as the condensing combi boiler will have a large, internal heat exchanger.

If you are concerned by your rising energy bills and have now reached a time when your ageing boiler needs replacing, or even if you are considering installing central heating for the first time, you should actively review whether a combi boiler is right for your home.

Most of the large national boiler installers offer assistance to the homeowner in selecting the right boiler. They obviously want to sell their installation services and supply a boiler to you but the first step is to gather information about your home in order to develop a sensible quotation. In conducting this boiler installation audit they will be in a position to identify the best combi boiler for your home, if indeed a combi boiler is the right choice.

You need to be aware that a combi boiler supplies hot water on demand. This is a great benefit in reducing energy usage as there isn’t a large hot water tank slowly losing heat making your system inefficient. The absence of the hot water tank also will create space in your airing cupboard, a benefit for smaller homes. The downside of this “instant hot water” is that the amount of hot water produced is limited by the capacity of the combi boiler. If you only use one hot water tap at a time this is not an issue.

The situation becomes critical when there are several members of your family who wish to use a hot water tap, have a bath or run a shower at the same moment. If your central heating system is also putting you can see that there is a large demand for production of instantaneous hot water and the combi boiler can become overwhelmed and not be able to meet the hot water demand.

The best way to get the right boiler is to get a free quote from the likes of British Gas and npower, and at the same time quiz their heating adviser to ensure that you understand what they recommend as the right combi boiler and why they have selected that model.

Buying the right combi boiler is important as this will not be a trivial purchase. A boiler has an expected lifetime of 15 years so it will be a long time before you can replace your boiler should you have selected the wrong combi boiler in the first instance.

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