How Much does a New Boiler Cost?

A boiler is an essential piece of machinery that every home needs. It is the heart of your property’s central heating system, supplying heat to your radiators and hot water to your taps and showers. 60% of your spend on annual energy bills is for heating, so having an efficient boiler installed can save you a lot of money!

The price of a new boiler can vary greatly from as little as £650 up to more than £6,000. The amount you will pay for a new boiler will depend on the type and size of the boiler you need. This will be determined by factors such as the kind of property you live in and the number of radiators/rooms you have.

The table below provides you with an approximate price range of boilers manufactured by the leading boiler brands in the UK. To find out more information about these brands, read our guide to the best boilers.

 

Boiler Brand Typical Price Range
Grant £1,110 – £3,900
Ideal £640 – £2,460
Vaillant £670 – £1,500
Viessmann £855 – £6,190
Worcester Bosch £730 – £2,620

Boilers are manufactured in a range of sizes to cater for the heating demands of different sized properties. Residential boilers typically come in sizes 24kW to 42kW. As a general rule, the larger your home is, the larger the boiler you will need.

For example, a small terraced house with one bathroom and up to 10 radiators will typically need a boiler between 24kW and 27kW. In comparison, a large detached house with two or more bathrooms and up to 20 radiators will need a boiler between 35kW and 42kW. Obviously the larger the boiler you need, the more you should expect to pay for it.

Size isn’t the only factor that can affect the cost of a new boiler – the type of boiler you require also plays a role. There are three main types of boiler installed into UK houses: combination (combi), conventional and system.

Combi boilers are the most popular type of boiler and tend to be the cheapest to purchase and install. You can find out more about the cost of the different types of boilers by reading below.

Combi Boiler Cost

A combi or combination boiler heats both your water and radiators directly from the boiler itself. This means that there is no need for a water tank and pipework to be installed into your home. This is great if you live in a small property or one with limited roof space.

 

Best for:

  • Small properties with little to no storage and loft space
  • Homes with one bathroom

The table below shows you typical combi boiler prices based on their size, produced by the best boiler brands in the UK:

 

Boiler Brand Size Range Typical Price Range
Grant 21kW – 36kW £880 – £3,200
Ideal 24kW – 40kW £640 – £1,310
Vaillant 24kW – 28kW £860 – £1,480
Viessmann 26kW – 35kW £915 – £1,375
Worcester Bosch 12kW – 42kW £880 – £2,620

Conventional Boiler Cost

A conventional boiler, also known as a regular boiler, requires both a hot water cistern and a cold water tank to feed hot water to your radiators and taps. These will need to be installed into your loft and the upper levels of your house.

Best for:

  • Large properties with plenty of storage and loft space
  • Homes with two or more bathrooms

The table below shows you the typical price range of conventional boilers based on their size, produced by the best boiler brands in the UK:

Boiler Brand Size Range Typical Price Range
Grant 15kW – 70kW £1,110 – £3,900
Ideal 12kW – 36kW £650 – £2,460
Vaillant 12kW – 38kW £670 – £1,395
Viessmann 13kW – 35kW £855 – £1,360
Worcester Bosch 12kW – 70kW £730 – £2,175

System Boiler Cost

A system boiler heats your radiators directly, but the hot water from the boiler must be pumped through a hot water cylinder to feed hot water to your taps and showers. This will need to be stored in your loft or the upper levels of your house.

Best for:

  • Large properties with little to no loft space
  • Homes with two or more bathrooms

The table below shows you the typical price range of system boilers based on their size, produced by the best boiler brands in the UK:

Boiler Brand Size Range Typical Price Range
Grant 15kW – 46kW £1,340 – £2,070
Ideal 15kW – 32kW £725 – £1,210
Vaillant 12kW – 37kW £785 – £1,285
Viessmann 19kW – 35kW £895 – £4,340
Worcester Bosch 9kW – 35kW £780 – £2,410

How Much does a Boiler Installation Cost?

Installing a new boiler can sometimes cost as much as the boiler itself. Boiler installation costs typically range from £500 to £1,500 depending on the type you have installed, how much technical work is needed to fit it and the parts needed and their availability.

Conventional and system boilers often cost a lot more to install than combi boilers due to the pipework and water tanks involved in fitting them. Total installation time for these boilers can be up to three days.

Only a trained professional should install your new boiler. If you are having an LPG-run or gas boiler, the fitter must be a Gas Safe Registered engineer. For oil-run boilers, you should use an OFTEC registered installer. For a list for registered installers, visit the Gas Safe Register or OFTEC.

The table below provides you an example of the estimated installation costs of a new combi, conventional and system boiler:

Boiler Type Boiler Cost Installation Cost Total Cost
Combi £800 £550 £1,350
Conventional £950 £1,200 £2,150
System £1,050 £1,100 £2,150

When choosing what company to install your new boiler, bear in mind that energy providers have been found to charge up to a third more for the same job than independent installers.

Additional costs to be aware of when budgeting for your installation include:

  • Changing from one type of boiler to another
  • Moving the location of the boiler
  • Removing old or damaged parts, such as pipes, radiators and TRVs (thermostatic radiator valves)
  • Powerflushing your central heating system

It is unlikely that you will need all these additional extras. Some may already be included in your installation quote, while others might not be necessary for your installation.

If you are looking for a boiler quote in Preston look no further than Booths Gas Services.

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