What are condensing central heating boilers?

When it comes to making your home more energy efficient, condensing central heating boilers are the popular style. With a non-condensing boiler the efficiency will be around 75% which could see you spending an extra £300 every year on heating bills.

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Condensing central heating boilers, however, have a heightened efficiency and you would see efficiencies stretch towards the 90% mark. The difference in efficiency levels is purely down to how much heat is extracted from waste gases, rather than being lost.

With a condensing boiler, less hot gas can escape and be lost in the flue. Instead it’s captured and used to provide heat for your property.

This efficiency is created by having two exchangers. Firstly, in condensing central heating boilers heat will rise upwards into the exchanger before being diverted to a second exchanger. This means even more heat can be taken in. Once the hot gas leaves your boiler it’s only at a temperature as low as 55°C, rather than 180°C typical in a regular boiler.

When it comes to condensing boilers, the most popular style by far is the combi boiler. There are two reasons it has become such a popular feature in UK homes. Firstly, it’s small and compact, saving room in the home and can be easily fitted to a kitchen wall. And secondly, combi central heating boilers provide hot water whenever it’s needed, without use of a water storage tank.

With an older boiler you’re more likely to see a storage tank installed in the loft or perhaps the airing cupboard. Installing a combi will open up space and bills can be reduced annually by £300.

Find out how much you could save with a replacement boiler by taking a look at the table below:

Boiler savings


Facts & Figures You’ll Love To Share

  • Heating accounts for around 60% of the annual household bill and a new boiler can slash expenses.
  • By replacing your old and inefficient boiler you can save up to £310 a year according to the Energy Saving Trust.
  • Energy prices have doubled since 2004 and will double again by 2020, so secure your energy future with an A-rated boiler.
  • An annual boiler service costs between £50 and £100 but could save you hundreds of pounds on future repair work.
  • With a new boiler you can slash carbon dioxide emissions by a whopping 1,200kg each year.

Tom Crosswell

I have been managing online projects since 1999 and I'm a experienced marketeer, who is well versed in international brand management, online business strategy and developing long term relationships. Through my academic and professional background I am a specialist in generating online loyalty towards brands. My experience has taught me that ultimately business is about relationships and people. For more information see my Google+ page.

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