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Compare Gas Boiler Prices

  • Gas Boiler Cost between £625 and £1,250
  • So you should expect to pay no more than £1,885 to £2,500 when you factor in installation charges.
  • Comparing Gas Boiler Quotes could save you up to 30%.
  • See if you could save £340 on your energy bills now.
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Home / Home Improvements / Boilers / Gas Boilers
  • Ideal
  • Ferroli
  • Baxi
  • Potterton
  • Worcester

New Gas Boiler:

Are you thinking about getting a brand new combi boiler for your home to keep it nice and warm in winter? Gas boilers are one of the most significant investments that you can make when you’re improving your home. If you’ve never had new one installed before or it’s been a long time since you last replaced your gas boiler, what is it that you need to know to make the right choice for your household?

  • Gas boilers are normally fuelled by natural gas although LPG is another option available in locations that do not have a mains gas supply.
  • A gas boiler is usually used to heat water that comes out of taps in your bathroom, kitchen and cloakroom and to provide hat water for your central heating radiators in your home to keep you warm.

Types of Gas Boiler

There are different types of gas boiler such as the

Gas Boiler Installation Prices

When budgeting for your replacement combi boiler, here’s a general range of prices to give you a good idea of just how much you’ll need to save up:

On your quote Range of prices
The cost of your boiler £625-£6,190
Boiler installation cost £630-£780
Cost of moving pipes £190-£310
Mechanical flush before installation £440-£535
TOTAL £1,885-£7,815

As you can see, there’s a really wide variation between the bottom price and the top price. That variation is caused mainly by the cost of the boiler you choose. Please do bear in mind that most homeowners will choose a combi boiler which costs them between £625 and £1,250 so you should expect to pay no more than £1,885 to £2,500 when you factor in installation charges.

In addition, mechanical flushes are only needed when you’re replacing a very old boiler system. What that means, in probably 85% or more of installations, is that you won’t need to budget the £440 to £535 it costs into your calculations.

Later in this article, we’ll look at the other factors that influence the price of a gas combi boiler installation.

Benefits:

  • A new gas boiler is likely to be more efficient than your old one.
  • More cost effective resulting in you probably being able to save a significant amount of money on your fuel bills every year.
  • It is also possibly going to be more compact than your old one thus taking up less space.

Which gas boiler to choose

There are a number of different key factors that not only influence the price of the boiler you pay but which also influence how suitable the boiler is for your home.

Dimensions – first is the height, the width, and the depth of your boiler. If your replacement combi boiler is going into the same place in your home where it is now, your installer will probably recommend a boiler which is exactly the same size or very close in size. If you’re moving the boiler to a new location in your property, be sure to tell the installer where you want it to go to so that he or she can recommend a boiler which fits comfortably into the place you have in mind.

Flow rate – the flow rate lets you know how many litres of water your combi boiler can handle every minute. The more taps you have around the home, the better it is to have a higher flow rate.

Output – closely connected to the flow rate is the output (measured in kilowatts (kW)). You want your water to be hot when it comes out of the tap or out of the shower. To achieve that, you’ll need a combi boiler that can easily heat up the amount of water that your household generally needs just when it needs it.

Energy efficiency rating – combi boiler technology has come a long way in a few years and they’ve become very energy efficient. “A”-rated boilers use 90% of more of the gas used in heating water for your taps and your radiators with “B”-rated boilers coming close behind at 85-89% utilisation. The more energy efficient your boiler, the lower your gas bills.

What other factors does an installer consider when making a combi boiler recommendation for your home? Of course, every property is different and the people living in these properties have different needs but here’s the general rule of thumb installers use:

  • Small property with up to 10 radiators and 1 bathroom – a combi boiler with 24kW-27kW output
  • Medium-sized property with up to 15 radiators and 2 bathrooms – a combi boiler with 28-34kW output
  • Large property with up to 20 radiators and 2 or more bathrooms – a combi boiler with an output greater than 35kW output.

If you get the right boiler, you’ll benefit every year from sizable savings on your utility bills. Get it wrong and, although you’ll have all the hot water and heating you’ll ever need, you won’t see the savings on what you pay for your gas because your new combi boiler will cost a lot more to run.

Boiler Brands & their Prices

There are six main boiler manufacturers in the UK and installers prefer to work with these big brands because of the quality of the combi boilers they produce and the length of guarantees they offer to clients.

Worcester Bosch combi boiler costs - EE Rating (A)

Established in 1962 and suppliers to Sandringham Estate, Worcester Bosch score very highly on internet review sites with both customers and installers.

Worcester Bosch combi boilers guarantees last between 2 years and 5 years depending on the actual model you choose with your installer.

 

WORCESTER BOSCH Dimensions Max Flow (litres per min) Max Output Price
Greenstar 25Si 710mm x 400 mm x 330 mm 10.2 25 kW £850
Greenstar 28i Junior 710 mm x 400 mm x 330 mm 11.4 28 kW £855
Greenstar 28CDi Compact 680 mm x 390 mm x 280 mm 11.4 28 kW £975
Greenstar 30Si 710 mm x 400 mm x 330 mm 12.3 30 kW £955
Greenstar 29CDi Classic 760 mm x 440 mm x 360 mm 12.3 29 kW £1,020
Greenstar 32CDi Compact 680 mm x 390 mm x 280 mm 13.1 32 kW £1,085
Greenstar 34CDi Classic 760 mm x 440 mm x 360 mm 14.3 34 kW £1,060
Greenstar Highflow 550CDi 850 mm x 600 mm x 600 mm 14.3 30 kW £2,035
Greenstar 36CDi Compact 680 mm x 390 mm x 280 mm 14.7 36 kW £1,205
Greenstar 38CDi Classic 760 mm x 440 mm x 360 mm 16.4 38 kW £1,275
Greenstar 42CDi Classic 760 mm x 440 mm x 360 mm 17.1 42 kW £1,435
Greenstar Highflow 440CDi 850 mm x 600 mm x 600 mm 20 29 kW £1,710
Greenstar 24i Junior 710 mm x 400 mm x 330 mm 9.8 24 kW £765

Potterton combi boiler costs

Potterton, part of Baxi Heating (we cover them later in this article), has been manufacturing boilers since 1850 and there are currently over seven million installed in UK homes.

Guarantees on Potterton boilers last between 1 year and 7 years and you can see their current range of combi boilers below.

POTTERTON Dimensions Max Flow (litres per min) Max Output Rating Price
Performa Combi 24 Eco HE 780 mm x 450 mm x 345 mm 9.8 24 kW B £640
Gold Combi 24 HE A 780 mm x 450 mm x 345 mm 9.8 24 kW B £640
Performa Combi 24 Eco HE 780 mm x 450 mm x 345 mm 9.8 24 kW A £690
Performa Combi 24 Eco HE 780 mm x 450 mm x 345 mm 9.8 24 kW B £640
Performa Combi 30 HE 780 mm x 450 mm x 345 mm 12.1 30 kW B £705
Heatmax Combi 24 HE 780 mm x 450 mm x 345 mm 9.8 24 kW A £720
Gold Combi 28 HE A 780 mm x 450 mm x 345 mm 11.5 28 kW A £755
Heatmax Combi 28 HE 780 mm x 450 mm x 345 mm 11.5 28 kW A £790
Titanium Combi 24 780 mm x 450 mm x 345 mm 9.8 24 kW A £805
Gold Combi 33 HE A 780 mm x 450 mm x 345 mm 13.5 33 kW A £820
Promax Combi 28 HE Plus A< 780 mm x 450 mm x 345 mm 11.5 28 kW A £840
Titanium Combi 28 780 mm x 450 mm x 345 mm 11.5 28 kW A £865
Heatmax Combi 33 HE 780 mm x 450 mm x 345 mm 13.5 33 kW A £865
Titanium Combi 33 780 mm x 450 mm x 345 mm 13.5 33 kW A £925
Promax Combi 33 HE Plus A 780 mm x 450 mm x 345 mm 13.5 33 kW A £950
Titanium Combi 40 780 mm x 450 mm x 345 mm 16 40 kW A £995

Ideal combi boiler prices

Ideal were founded in 1906 and they were one of the first companies to manufacture boilers small and powerful enough to be installed in kitchens rather than in basements. They won the “Reader Recommended” badge from Good Housekeeping magazine in both 2017 and 2018.

Depending on the Ideal combi boiler model you choose, guarantees last between 2 years and 10 years.

IDEAL Dimensions Max Flow (litres per min) Max Output EE Rating Price
Logic Combi 24 700 mm x 395 mm x 278 mm 9.9 24 kW B £655
Logic Combi ESP1 24 830 mm x 395 mm x 278 mm 10.7 24 kW A £725
Logic Combi 30 700 mm x 395 mm x 278 mm 12.4 30 kW B £745
Logic Combi ESP1 30 830 mm x 395 mm x 278 mm 13.4 30 kW A £815
Logic Combi 35 700 mm x 395 mm x 278 mm 14.5 35 kW B £850
Logic+ Combi 24 700 mm x 395 mm x 278 mm 9.9 24 kW A £880
Logic Combi ESP1 35 830 mm x 395 mm x 278 mm 15.7 35 kW A £930
Vogue Combi 26 740 mm x 445 mm x 330 mm 10.6 26 kW A £945
Logic+ Combi-30 700 mm x 395 mm x 278 mm 12.4 30 kW A £965
Vogue Combi 26 830 mm x 395 mm x 278 mm 10.7 26 kW A £980
Logic Code Combi ES 26 830 mm x 395 mm x 278 mm 10.7 26 kW A £1,000
Logic+ Combi 35 700 mm x 395 mm x 278 mm 14.5 35 kW A £1,010
Vogue Combi 32 740 mm x 445 mm x 330 mm 13.1 32 kW A £1,055
Vogue Combi 32 830 mm x 395 mm x 278 mm 13.4 32 kW A £1,095
Vogue Combi 40 740 mm x 445 mm x 330 mm 16.4 40 kW A £1,180
Vogue Combi 40 830 mm x 395 mm x 278 mm 15.7 40 kW A £1,220
Logic Code Combi ES 33 830 mm x 395 mm x 278 mm 13.4 33 kW A £1,300
Logic Code Combi ES 38 830 mm x 395 mm x 278 mm 15.7 38 kW A £1,330

Glow-worm combi boiler prices

Based in Derbyshire since 1934 and recently bought out by Valliant (more on Valliant-branded boilers later in this article), the company prides itself on “exceptional and durable energy solutions”.

Glow-worm customers benefit from guarantees on their combi boilers which last between 2 years and 7 years.

GLOW-WORM Dimensions Max Flow (litres per min) Max Output EE Price
Easicom 24 740 mm x 480 mm x 338 mm 9.8 24 kW B £625
Betacom 24 900 mm x 500 mm x 390 mm 9.8 24 kW A £640
Flexicom 24cx 700 mm x 390 mm x 280 mm 9.85 24 kW A £650
Easicom 28 740 mm x 480 mm x 338 mm 11.5 >28 kW B £660
Betacom 28 900 mm x 500 mm x 390 mm 11.2 28 kW A £680
Flexicom 30cx 700 mm x 390 mm x 280 mm 12.3 30 kW A £695
Ultracom 24cxi 726 mm x 418 mm x 346 mm 10.4 24 kW A £740
Ultimate 30c 740 mm x 418 mm x 338 mm 12.5 30 kW B £750
Ultimate 35c 740 mm x 418 mm x 338 mm 14.6 35 kW B £800
Ultracom 30cxi 726 mm x 418 mm x 346 mm 12.5 30 kW A £875
Flexicom 35cx 700 mm x 390 mm x 280 mm 14.4 35 kW A £880
Ultracom 35cxi 726 mm x 418 mm x 346 mm 14.6 35 kW A £975
Ultracom2 35 store 890 mm x 470 mm x 561 mm 19.1 35 kW A £1,310

Baxi combi boiler prices

Baxi, now part of the Dutch BDR Therma Group, are based in Warwick and they currently score 98% on customer satisfaction on Reevoo.

Their guarantees last between 2 years and 10 years on their range of combi boilers.

BAXI Dimensions Max Flow (litres per min) Max Output EE Rating Price
Neta-tec Combi 24 GA 700 mm x 390 mm x 290 mm 9.8 24 kW A £730
Duo-tec Combi 24 HE A 780 mm x 450 mm x 345 mm 9.8 24 kW A £740
Duo-tec Combi 24 GA 763 mm x 450 mm x 345 mm c 24 kW A £755
Neta-tec Plus Combi 24 GA 700 mm x 390 mm x 290 mm 9.8 24 kW A £825
Platinum Combi 24 HE A 780 mm x 450 mm x 345 mm 9.8 24 kW A £885
Neta-tec Combi 28 GA 700 mm x 390 mm x 290 mm 11.5 28 kW A £815
Duo-tec Combi 28 HE A 780 mm x 450 mm x 345 mm 11.5 28 kW A £825
Duo-tec Combi 28 GA 763 mm x 450 mm x 345 mm 11.5 28 kW A £875
Neta-tec Plus Combi 28 GA 700 mm x 390 mm x 290 mm 11.5 28 kW A £935
Platinum Combi 28 HE A 780 mm x 450 mm x 345 mm 11.5 28 kW A £950
Neta-tec Combi 33 GA 700 mm x 390 mm x 290 mm 13.5 33 kW A £850
Duo-tec Combi 33 HE A 780 mm x 450 mm x 345 mm 13.5 33 kW A £900
Duo-Tec Combi 33 GA 763 mm x 450 mm x 345 mm 13.5 33 kW A £965
Neta-tec Plus Combi 33 GA 700 mm x 390 mm x 290 mm 13.5 33 kW A £1,035
Platinum Combi 33 HE A 780 mm x 450 mm x 345 mm 13.5 33 kW A £1,045
Duo-tec Combi 40 HE A 780 mm x 450 mm x 345 mm 16 40 kW A £940
Duo-Tec Combi 40 GA 763 mm x 450 mm x 345 mm 16.4 40 kW A £1,015
Platinum Combi 40 HE A 780 mm x 450 mm x 345 mm 16.4 40 kW A £1,150

Veissmann combi boiler prices with EE Rating 'A'

Founded in 1917, Veissmann opened its UK office in 1989 in Telford. From their bases, they’ve trained over 2,500 installers and contractors on its range of combi boilers.

Guarantees on Veissmann boilers last between 2 years and 5 years.

VEISSMANN Dimensions Output Price
Vitodens 100-W Combi 26kW 725 mm x 400 mm x 340 mm 26 kW £845
Vitodens 050-W 29 (12.1  flow rate) 700 mm x 400 mm x 350 mm 29 kW £860
Vitodens 050 W 35 (14  flow rate) 707 mm x 400 mm x 350 mm 35 kW £860
Vitodens 100-W Combi 30kW 725 mm x 400 mm x 340 mm 30 kW £1,045
Vitodens 100-W Combi 35kW 700 mm x 400 mm x 350 mm 35 kW £1,105
Vitodens 200-W Combi 26kW 850 mm x 450 mm x 360 mm 26 kW £1,150
Vitodens 200-W Combi 30kW 850 mm x 450 mm x 360 mm 30 kW £1,220
Vitodens 200-W Combi 35kW 850 mm x 450 mm x 360 mm 35 kW £1,295
Vitodens 111-W DHW Storage 26 900 mm x 600 mm x 480 mm 26 kW £1,520
Vitodens 111-W DHW Storage 35 900 mm x 600 mm x 480 mm 35 kW £1,630
Vitodens 222-F 19KW 1425 mm x 600 mm x 595 mm 19 kW £2,475
Vitodens 222-F 26KW 1425 mm x 600 mm x 595 mm 26 kW £2,515
Vitodens 222-F 35KW 1625 mm x 600 mm x 595 mm 35 kW £2,605
Vitodens 242-F 19KW 1875 mm x 600 mm x 595 mm 19 kW £5,985
Vitodens 242-F 26KW 1875 mm x 600 mm x 595 mm 26 kW £6,190

Valliant combi boiler prices

Supplying 60 countries and established more than 140 years ago, Valliant’s 3,800 reviews on TrustPilot offer new clients peace of mind as they have achieved a very high score of 8.6 out of 10.

Valliant’s combi boiler guarantees last between 2 years and 7 years.

VALLIANT Dimensions Max Flow (litres per min) Max Output Price
ecoTEC Pro 24 720 mm x 440 mm x 335 mm 9.4 24 kW £885
ecoTEC Plus 824 720 mm x 440 mm x 335 mm 9.4 24 kW £965
ecoTEC Pro 28 720 mm x 440 mm x 335 mm 11.5 28 kW £875
ecoTEC Plus 831 720 mm x 440 mm x 335 mm 12.7 31 kW £1,060
ecoTEC Exclusive 832 800 mm x 480 mm x 450 mm 12.9 32 kW £1,225
ecoTEC Plus Storage 937 720 mm x 440 mm x 597 mm 15.2 37 kW £1,205
ecoTEC Plus 837 720 mm x 440 mm x 403 mm 15.2 37 kW £1,275
ecoTEC Exclusive 838 800 mm x 480 mm x 450 mm 15.2 38 kW £1,305

Other issues that affect the price of a combi boiler installation

Number of radiators

With your new combi boiler, replacing a radiator with no extra pipework will cost between £330 and £400 including installation and it will normally take around two hours per radiator to complete.

Piping work

If you’re replacing one combi boiler with another and keeping it in the same place, your installer will likely be able to use your current piping for your new system. However, be prepared for additional costs for both the pipes and for labour if your new combi boiler is being installed at a new location in your home.

Mechanical flush

For boilers over 10 years old, your installer might recommend that you allow them to perform a mechanical flush, sometimes called a powerflush.

Over the years, debris including rust builds up in the pipes around your home affecting the flow of water to your radiators. Your system has to work a lot harder to produce heating results that aren’t as good. Signs to watch out for indicating that you might need a powerflush include:

  • some radiators not warming up as quickly as others,
  • a lot of noise coming from your existing boiler,
  • hot pipes at the same time as having cold radiators.

Programmer and thermostats

Thermostats prevent your home or rooms within your home from getting too warm. Your thermostat will tell your heating system to stop providing hot water to the radiators when your home or rooms within your home reach a certain temperature. Likewise, if it gets too cold, they tell your system to provide as much heat as is needed to get your home to the ideal temperature.

Traditionally, thermostats could only work on a whole-house basis however, now, with the advent of smarter technology, they can now be programmed easily with different settings for each room.

A boiler programmer (sometimes called a central heating programmer) gives you the option of switch on and off your heating and your hot water at different times and on different days.

Including installation, you should expect to pay between £160 and £200 for your thermostat and programmer.

Thermostatic radiator valves (TRVs)

TRVs allow you to control the temperature of an individual room by altering the flow of hot water to the radiator within a particular room.

TRVs generally cost between £15 and £25 for every radiators that they’re fitted on including installation.

Should my combi boiler installer belong to any trade?

By law, all UK installation, repair, and maintenance of gas-powered equipment must be carried out by individual professionals accredited by the Gas Safe Register (click here for more information).

Find the right supplier with us

It’s always better to get three or four quotes from installers before deciding on your new combi boiler. And we can help you do that here are CompareCompanies.

Each of the installers we’ll put you in touch with are registered with Gas Safe and they have more than one year’s full trading history behind them – important for peace of mind.

Although you can get great deals from national companies and it’s always worth, if possible, getting one in to take a look, you can save up to 30% for exactly the same combi boiler installation by going local.

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    Got 2 suppliers, both phoned me within 24 hours, both made appointments to come and see me the following day.

    John Levy

  • Excellent

    Excellent service would recommend.

    Graeme

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