Installing a new boiler

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If you want to replace your boiler then you’ve probably discovered that installation costs for the modern system can vary depending on the brand, the efficiency and the type of boiler you choose.

In fact, reports suggest that energy companies are charging the most for replacement boilers, up to a third more than independent traders, according to a freedom of information request. So this is your first port of call: the local boiler companies.

But to help you understand the costs you’d expect to pay, take a look at our new boiler guide, outlining a number of scenarios you could face.


  • Replacing an existing gas condensing combination boiler in the same position as the previous one

The old boiler will need to be removed and disposed of, with a replacement put in its place.

Estimated cost: Between £540 and £660.

Extra costs include a mechanical flush which may be needed for very old systems. A system flush will clear out sludge and build-up in the pipes and radiators, with prices around £510.

  • Replacing a non-condensing gas boiler with a condensing one

If you want to have a combi boiler fitted, the installer with need to check the gas supply and flue position. This may need removing or replacing to allow installation of the new boiler.

Estimated cost: Between £640 and £770

If pipes need to be removed or moved, a further £200 to £300 will be added to the price. Once again, if you’re replacing an old system then a flush may be required.

  • Installing a new gas condensing boiler elsewhere in the home and upgrading to the heating system with controls and radiator valves

As you can expect, this job requires more plumbing work than the previous two. A condensate drain will need to be installed and the flue must be routed.

Estimated cost: Between £1,140 and £1,440

A chemical flush could be necessary, which will remove debris in the system and cost around £200.

  • Replacing a gas heat-only boiler for a condensing combi boiler

The system will need to be converted from an open-vented setup to a sealed one. Of course, redundant equipment such as the water cylinder and storage tank can be removed.

Estimated cost: Basic jobs start from around £1,440

Any additional pipework necessary will cost between £200 and £300, whilst a mechanical or chemical flush could set you back even more.

Finding a registered installer

Remember that when finding an installer your first priority is to select someone Gas Safe registered. Always ask for identification before the engineer carries out any work on the boiler. You can even check out the Gas Safe website with the member’s registration number to ensure they’re still listed.

 

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.

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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.