New Boiler Cost and Installation 2018

A new boiler can cost anywhere from £580 to over £4,000, with installation costing around £500 to £1,500 on top. How much you’ll pay will depend on what type of boiler you buy and where you install it, its size and efficiency, and what brand it’s made by. Installing a new boiler will allow you to save up to £570 on your energy bills every year.

If you’re worried about the price of a new boiler and fitting, you can buy on finance which allows you to spread the cost over a number of small monthly repayments. You can also find cheaper installation fees by using a small, local firm rather than a large national company. Once installed, boilers are relatively cheap to maintain, only requiring a service once a year at a cost of around £70.


What's In This Guide to New Boiler Cost and Installation?

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How Much Is a New Boiler?

A new boiler can cost between £500 and £6,000, depending on its size, what type it is, and the brand it’s made by. This table shows you the price of boilers for different sized homes:

House Size
Number of Bedrooms
Number of Bathrooms
Number of Radiators
Required Boiler Size
Price Range
Small
1 to 2
1
up to 10
24kW to 27kW
£580 to £6,190
Medium
2 to 4
1 to 2
up to 15
28kW to 34kW
£650 to £4,330
Large
4+
2+
up to 20
35kW to 42kW
£700 to £3,800


Apart from the cost of the boiler itself, you’ll also need to pay to have your new boiler installed by a trained engineer. Boiler installation costs start from around £500 up to £1,500, depending on the complexity of the job. The table below shows you the cost of some different boiler installations:

Type of Boiler Installation
Installation Cost
Job
Time Taken
Replacing an old gas boiler with a new gas boiler in the same location
£550 to £650
Removing and disposing of the old boiler before installing the new boiler
1 day
Replacing an old gas boiler with a new gas boiler in a different location, and upgrading your central heating system
£1,100 to £1,400
Re-plumbing the pipes, adding a condensate drain and re-routing the flue
1.5 days
Replacing an old conventional boiler with a new combi boiler
£1,500
Removing obsolete parts such as the cold water storage tank, and re-plumbing the pipes
1.5 days


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Boiler Installation Cost Calculator

Get an estimate of how much a new boiler and installation will cost you using our calculator. To get a free quote from a top-rated boiler installer in your area, just click on the orange button below and fill in a short form with some basic information about you and your home.


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Compare Boiler Prices

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Gas Boiler Prices by Brand

Most homes in the UK have a gas-fired boiler to power their central heating and supply hot water to their taps and shower. The cost of a new gas boiler will depend on whether you need a combi, conventional or system boiler.

Best for:

• Those not connected to the national gas network

• Homes of any size

Gas boilers start from as little as £600 and increase to over £2,500. The table below shows you the price of gas boilers based on which brand they’re made by:

Boiler Brand
Boiler Type
Boiler Size
Price Range
Alpha
Combi, Conventional, System
13kW to 40kW
£600 to £2,210
Baxi
Combi, Conventional, System
12kW to 40kW
£650 to £1,440
Ideal
Combi, Conventional, System
12kW to 40kW
£640 to £2,460
Potterton
Combi, Conventional, System
12kW to 40kW
£580 to £2,740
Vaillant
Combi, Conventional, System
12kW to 43kW
£670 to £1,500
Viessmann
Combi, Conventional, System
13kW to 35kW
£850 to £6,190
Worcester Bosch
Combi, Conventional, System
9kW to 41kW
£730 to £2,360



Oil Boiler Prices by Brand

Like the name suggests, oil boilers are fired by oil. Oil boiler prices depend on whether you opt for a combi, conventional or system boiler.

Best for:

• Those not connected to a gas supply

• Anyone looking for an alternative to electric or gas

There are fewer manufacturers that produce oil boilers, namely Firebird, Grant, Mistral, Warmflow and Worcester Bosch. Based on our research, you can expect to pay between £1,000 and £5,000 for the system itself. The table below shows you the typical price range of oil boilers based on their size and boiler type:

Boiler Brand
Boiler Type
Boiler Size
Price Range
Firebird
Combi, Conventional, System
20kW - 73kW
£1,250 to £2,820
Grant
Combi, Conventional, System
15kW - 70kW
£1,110 to £3,890
Mistral
Combi, System
20kW - 70kW
£1,700 to £4,600
Warmflow
Combi, System
21kW - 33kW
£1,350 to £2,000
Worcester Bosch
Combi, Conventional, System
12kW - 70kW
£1,255 to £2,610



Biomass Boiler Prices by Brand

Biomass boilers provide heating that's fired by wood. The cost of a biomass boiler will be down to the type you choose, from plane grate and moving grate to batch-fired and stoker.

Best for:

• Those not connected to an electric or gas supply

• People not connected to a mains supply and looking for an alternative to oil boilers

There are a couple of well-respected biomass boiler manufacturers - ETA and Herz - that are located in Germany. Based on our research, you can expect to pay anything between £8,000 and £15,000 for the biomass boiler plus full installation. Biomass boilers typically come with a warranty of between 2 and 5 years.



Combi Boiler Prices by Brand

Combi or combination boilers are the most common type of boiler in UK homes – and it’s no wonder why. They heat both your water and radiators directly from the boiler itself, meaning there’s no need for a water tank or lots of pipework to be fitted into your home; and this also reduces the cost of installing a combi boiler.

Compared to other boilers, you’ll also find that this type of system is generally more cost-effective overall. Combi boiler deals start from £640 and thanks to better efficiency, 90% of the energy they use is converted into heating your radiators and water.

Best for:

• Small properties with little to no storage and loft space

• Homes with one bathroom

• Reducing heating costs

The table below shows you the typical price of combi boilers made by some of the most popular boiler brands in the UK:

Boiler Brand
Boiler Size
Price Range
Alpha
26kW to 40kW
£700 to £2,000
Baxi
24kW to 40kW
£660 to £1,195
Grant
21kW to 36kW
£880 to £3,200
Ideal
24kW to 40kW
£640 to £1,310
Potterton
24kW to 40kW
£615 to £1,650
Vaillant
24kW to 28kW
£860 to £1,480
Viessmann
26kW to 35kW
£915 to £1,375
Worcester Bosch
12kW to 41kW
£880 to £2,620



Conventional Boiler Prices by Brand

A conventional boiler, also known as a regular or heat-only 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. Conventional boiler prices start from around £600 for the smallest models.

Best for:

• Large properties with plenty of storage and loft space

• Homes with 2 or more bathrooms

The table below shows you the price range of conventional boilers produced by popular boiler brands in the UK:

Boiler Brand
Boiler Size
Price Range
Alpha
13kW to 24kW
£600 to £870
Baxi
12kW to 30kW
£730 to £1,000
Grant
15kW to 70kW
£1,110 - £3,900
Ideal
12kW to 36kW
£650 to £2,460
Potterton
12kW to 30kW
£690 to £1,230
Vaillant
12kW to 38kW
£670 to £1,395
Viessmann
13kW to 35kW
£855 to £1,360
Worcester Bosch
12kW to 70kW
£730 to £2,175



System Boiler Prices by Brand

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 a loft or lots of upstairs space

• Homes with 2 or more bathrooms

A system boiler can cost from £550 up to £4,500. The table below shows you how much system boilers cost based on what boiler brand manufactures them:

Boiler Brand
Boiler Size
Price Range
Alpha
20kW to 30kW
£785 to £2,220
Baxi
12kW to 32kW
£750 to £1,440
Grant
15kW to 46kW
£1,340 to £2,070
Ideal
15kW to 32kW
£725 to £1,210
Potterton
12kW to 32kW
£580 to £2,740
Vaillant
12kW to 37kW
£785 to £1,285
Viessmann
19kW to 35kW
£895 to £4,340
Worcester Bosch
9kW to 35kW
£780 to £2,410


If you'd like to get an accurate boiler quote for your home, hit the button below to fill in a short contact form.

How Much Would a New Boiler Cost You?


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Boiler Installation Cost

Installing a new boiler can sometimes cost as much as the boiler itself. Boiler installation costs are often between £500 to £1,500 depending on the type of boiler you have installed and where, how much additional work needs doing (such as fitting new pipes), and who you choose to install it. Big energy providers have been found to charge up to 33% more for the same boiler installation as small independent companies.

The table below provides you with an example of the estimated installation costs of different types of boiler:

Boiler Type
Boiler Cost
Installation Cost
Total Cost
Time Taken
Gas
£850
£950
£1,800
1 to 1.5 days
Oil
£1,500
£1,400
£3,900
2 days
Biomass
£8,000
£3,000
£11,000
3 days
Combi
£800
£600
£1,400
1 day
Conventional
£950
£1,200
£2,150
1.5 days
System
£1,050
£1,100
£2,150
1.5 days


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

• Changing from one type of boiler to another: £1,000 to £1,500

• Moving the location of the boiler: £1,000 to £1,200

• Moving or adding pipes: £200 to £300

• Flushing your central heating system: £200 to £500

Here Francis, a Gas Safe Registered Engineer, discusses what factors can affect the overall cost of your boiler installation:

 


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


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Buying a Boiler on Finance

Buying a boiler on finance allows you to spread its cost in instalments over a number of months (or years), rather than paying for it one lump sum. Interest is often added to your monthly repayments, however, meaning you’ll pay more for your boiler than it’s actually worth.

Most companies offer a wide range of finance options, so you should be able to find one that suits your needs. Below are some example finance repayment plans for a new boiler:

Cost of Boiler and Installation
Loan Repayment Period
Interest Rate
Monthly Repayment Amount
Total Amount of Interest Charged
Total Repayment Amount
£2,122
60 months
11.3%
£46.46
£665.60
£2,787.60
£2,979
60 months
14.9%
£69.28
£1,177
£4,156


Good to know: when applying for a boiler on finance, you’ll need to provide some personal information including a form of identification, proof of address, your employment status and your annual earnings. You might find it hard to be accepted for finance if you have a poor credit history.


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Cheap Boilers: Are They Worth It?

There are cheap boilers available, but the cheapest price doesn’t always mean the best value for money. A more expensive boiler could be more energy efficient and reliable, making it better value in the long run as you’ll save more on your energy bills and will have to fork out less on maintenance and repairs.

If you do buy a cheap boiler, make sure it’s from a well-known brand. The table below shows you the cheapest boilers available from some of the most popular boiler brands in the UK. Potterton and Alpha tend to make the cheapest boilers, while Grant and Viessmann boilers are often the most expensive.

Boiler Brand
Cheapest Price
Boiler Type
Boiler Size
Alpha
£600
Conventional
13kW, 18kW, 24kW
Baxi
£650
Combi
24kW, 28kW
Grant
£1,110
Conventional
15kW to 35kW
Ideal
£640
Combi
24kW, 30kW, 35kW
Potterton
£580
System
18kW, 24kW, 28kW
Vaillant
£670
Conventional
12kW to 30kW
Viessmann
£850
Conventional
13kW to 35kW
Worcester Bosch
£730
Conventional
12kW to 30kW


You can get even cheaper boilers from brands such as Vokera and Ferroli, with prices starting from around £495. However, we don’t recommend buying a boiler from one of these brands due to their poor reliability and build quality. A survey by Which? found that over 200 boiler engineers weren’t big fans of Vokera or Ferroli, rating them just 2/5. Homeowners weren’t too satisfied either, giving them a score of 3/5 - pretty average when compared to brands like Viessmann and Worcester Bosch who received 5/5. To see which boilers we recommend, visit our best boilers guide.

Don’t just focus on the cost of the boiler itself, however; actually installing a boiler can cost just as much. Small, independent installers tend to offer cheaper rates than large, national companies like British Gas, but always make sure that whoever is installing your boiler is qualified for the job.

If you are worried about the cost of a new boiler, you can visit our free boiler grants page to find out if you could qualify for financial help from the UK Government.

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How Much Will You Save? What Will Be Your Return on Investment?

You can save hundreds on your energy bills every year by replacing your old or inefficient boiler with a new, efficient boiler. A large detached house can save up to £570 a year, while a semi-detached home can save around £350 per year.

The Energy Saving Trust predicts you can save the following amount on your energy bills by installing a new A-rated boiler:

Type of Property
Typical Cost of Boiler and Installation
Annual Energy Bill Savings
Time Needed to Break-Even
Return on Investment After 10 Years
Detached House
£3,020
£570
5.2 years
£2,680
Semi-detached House
£2,632
£350
7.7 years
£768
Bungalow
£2,320
£290
8.0 years
£580
Mid-terrace House
£2,320
£280
8.3 years
£480
Mid-floor Flat
£2,112
£145
14.6 years
-£967

*These figures are based on replacing a G-rated condensing boiler with a new A-rated condensing boiler.


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Boiler Service Cost

Your boiler should be serviced once a year by a qualified engineer to ensure it continues to run effectively and safely. A boiler service should include the testing and cleaning of your boiler, as well as checking for any damage or faults. It should take about 30 minutes to complete.

According to Which? the average boiler service cost is around £72, but it can cost anywhere from £30 up to £120. The amount you’ll be charged will depend on who carries out the service and whether any problems are found.


How Much Do Boiler Repairs Cost?

Never attempt to fix your boiler yourself. Always use an accredited boiler engineer to do the job. As a guide, you should expect to pay between £100 and £400 for most repairs – this includes parts and labour costs. It’s impossible to give an exact figure for the cost of repairs because prices are affected by a range of factors including the type and age of your boiler, the cause of the fault, and the availability of spare parts.

The table below gives you an idea of how much the most common boiler repairs cost:

Repair
Approximate Cost
Air vent
£100
Valve
£220
Fan
£250
Printed circuit board
£260
Heat exchanger
£300


Always check your boiler warranty as you might find that it covers your boiler’s servicing and repairs, meaning you won’t have to pay a penny. All boilers come with at least a 1-year standard warranty, but you can extend your boiler warranty for up to 10 years. Some home insurance also comes with boiler emergency, which covers you if your home suffers central heating, boiler or hot water failure.

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