How much does a new boiler cost?

The Factors to Consider

There are many factors that will influence your new boiler cost, such as:

  • The size of your house and central heating system
  • Type of boiler
  • The brand and model of boiler you choose

To help you understand the various options in all of these areas we will now discuss them in more detail…

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How big is your house?

The demands on your boiler are determined by how many bathrooms need to be supplied with hot water and how many radiators you have in your central heating system, across all the bedrooms, kitchen and living rooms.

The larger this demand the greater the number of Kw output the boiler will need. For example, if you have 1 or 2 bedrooms and 1 bathroom then a 24-27Kw boiler should be sufficient. For a house with 4 or 5 bedrooms and 2 or more bathrooms you should be looking at a new boiler in the range of 35-42Kw.

What are the different types of boilers?

The best type of central heating system and boiler for your home should be energy efficient, so you use less energy making your bills lower, whilst providing the best hot water and heating performance.

Combi Boiler

combi boiler is the most common type as it is small and compact, so can be easily housed in a kitchen or garage, and it provides instant hot water as well as controlling your heating. Add to this the fact that no additional water tanks are required and it’s no surprise that combi boilers are the most popular choice for smaller homes with one bathroom.

Find out your combi boiler cost with our instant quote tool 

Standard Boiler

In contrast to the combi boiler, the standard boiler is ideal for larger houses with several bathrooms requiring hot water. It is also useful if water pressure in your house is low, but it does need two separate tanks, one for hot and one for cold water.

System Boiler

The system boiler is very like the standard system but does not require the cold water tank in the loft. It is similarly an ideal option for larger homes with multiple bathrooms and is economical to run.


Back Boiler

A house with a back boiler is likely to be an older system where the boiler is located behind a fireplace and can work off gas, electric or solid fuel. A conversion to a combi boiler would reduce your energy costs.

Brand and model of boiler

We install only top A+ rated boilers from these top manufacturers with up to 10 years warranty included free of charge…

Worcester Bosch

The UK’s leading boiler manufacturer, Worcester Bosch were founded in 1962 and have been awarded the Which? Best Buy award and are by royal appointment to Her Majesty the Queen! Choose from best selling combi boilers or a compact standard boiler.



Vaillant have been around since 1874 with a reputation for making top quality combi boilers. They are industry leaders in renewable technologies and were awarded the Quiet Mark approval for their ecoTEC range.


Established in 1850, some 7 million Potterton boilers have been installed in homes across the UK! Already making a range of reliable and efficient boilers, Potterton improved further by becoming part of the Baxi Boiler Group in 2000.



Generally regarded as manufacturing some of the best boilers on the market like the highly efficient Platinum 33kW Combi boiler, Baxi have been making their award-winning gas boilers since 1866.


Ideal were established over 100 years ago. Today they use pioneering technology to produce a range of reliable and efficient boilers. Reader recommended by Good Housekeeping magazine in 2017, the Vogue 32C combi is our best-selling Ideal boiler.

Ways to pay for your new boiler

Here at Boiler Plan UK we recognise that most people won’t have a spare amount of money ready and available at the time they find out that their boiler needs replacing. That’s why we offer a number of ways to spread your boiler replacement cost, making it possible for everyone to get a new boiler.

  • Buy now pay later – 0% APR for 1 or 2 years
  • Flexible monthly plan – No deposit required and low APR
  • Cash Sale – no finance required, payment in full

All options include free warranty so no need for boiler cover.

See more information on the different payment plans we offer


The cost of a new boiler really does depend on a range of factors. Whatever your needs and whichever boiler brand you choose, we’re with you every step of the way with our flexible finance options, easy installation by Gas Safe registered engineers and free warranty for your piece of mind.

Get a new boiler cost for your home on our website now using our instant quote tool