Vaillant Gas Boilers Prices

Vaillant Gas boilers prices range between £720 and £2,800, excluding the cost of installation

Vaillant boilers are highly recommended throughout Europe for their efficiency and environmentally friendly designs. The Vaillant ecoTEC range of domestic boilers are made with the highest quality components and are backed up with market leading guarantee packages. With a broad range of combination, system and open vent boilers available, the Vaillant ecoTEC range will provide the perfect boiler for your home.

Vaillant Combi Boilers Price Range – Hot Water On Demand

Perfect for homes with limited space and/or smaller water requirements, Vaillant combination boilers heat water only when hot water is needed. Vaillant combi boilers are the most energy efficient boilers in the Vaillant range because they connect directly to the mains supply and don’t require a cold water tank or hot water cylinder. The only disadvantage to this type of boiler is that water pressure may not be as high as it would be with other types of boilers, especially if more than one tap is being used at the same time. Prices range from £850 to £1,920 with varying dimensions, flow rates and outputs.

Below, you can compare each combi boiler series currently available from Vaillant and find out which options are best suited to your home and needs:

COMBI GAS BOILER SERIES SIZES SIZE OF HOME PRICE
Vaillant ecoFIT Pure Combi 25 – 35kW Small, medium and large-sized homes with one bathroom £850 – £1,100
Vaillant ecoTEC Pro Combi 24 – 30kW Small, medium and large-sized homes with one bathroom £900 – £1,800
Vaillant ecoTEC Plus Combi 25 – 38kW Small, medium and large-sized homes with one bathroom £1,100 – £1,500
Vaillant ecoTEC Exclusive with Green iQ Combi 35 – 43kW Medium to large homes with one or two bathrooms £1,400 – £1,920

Compare Vaillant Combi Boiler Quotes

Vaillant System Boilers Price Range – Eco-Friendly & Adaptable

System boilers are also known as sealed system boilers and provide hot water via a sealed system tank, which is usually housed in an airing cupboard. They do not require a cold water tank in the loft (unlike an open vent boiler) and they are advantageous in terms of satisfying high hot water demands. Vaillant system boilers can also be used in conjunction with other renewable energy heating systems such as solar thermal. Prices range from £780 to £2,800 with varying outputs to suit any home.

Designed for homes with greater hot water requirements, the Vaillant system boiler range includes the following options:

SYSTEM GAS BOILER SERIES SIZES SIZE OF HOME PRICE
Vaillant ecoTEC Plus System 12 – 37kW Small, medium and large-sized homes with multiple bathrooms £780 – £1,370
Vaillant ecoFIT Pure System 12 – 30kW Small, medium and large-sized homes with multiple bathrooms £840 – £1,160
Vaillant ecoTEC Exclusive with Green iQ System 27kW Medium to large-sized homes with multiple bathrooms £1,300
Vaillant ecoTEC Plus 48kW & 64kW System 48 – 64kW Large homes with multiple bathrooms £2,200 – £2,600
Vaillant ecoTEC 46kW & 65kW System 46 -65kW Commercial buildings and large homes with multiple bathrooms £2,200 – £2,800

Compare Vaillant System Boiler Quotes

Vaillant Regular Boilers Price Range – Great For Larger Properties

Vaillant regular boilers (often referred to as open vent, heat only or conventional boilers) provide central heating and hot water via a boiler, a storage cylinder (which is usually housed in the airing cupboard), as well as a cold water tank in the loft. The tank in the loft draws water from the mains supply and then feeds the hot water cylinder. The water is then heated by the boiler and can be distributed throughout the property. It might take time to reheat once the water runs out due to it being cylinder driven but you can use taps, showers and baths in different rooms at the same time which is a necessity for larger families. Prices range from £796 to £1430 with varying outputs.

The Vaillant regular boiler range has been developed with small, medium and large homes in mind, and includes:

REGULAR GAS BOILER SERIES SIZES SIZE OF HOME PRICE
Vaillant ecoFIT Pure Regular 12 – 35kW Small, medium and large-sized homes with more than one bathroom £730 – £1,440
Vaillant ecoTEC Plus Regular 12 – 35kW Small, medium and large-sized homes with more than one bathroom £720 – £1,520

Compare Vaillant Regular Boiler Quotes

Why Choose Vaillant?

Vaillant has been a leader in the heating market for more than 140 years and is best known for manufacturing some of the most reliable and energy efficient boilers in the whole of Europe. The brand consistently produces high-quality boilers that are much kinder to the environment without compromising on heating and hot water performance, so it comes as no surprise that Vaillant boilers are loved by their owners and heating engineers. Read on to find out why you should consider investing in a Vaillant boiler.

Among The Best Boilers Your Money Can Buy

As a market leader, Vaillant develops its range of combi, system and regular boilers using nothing other than the best materials and components to ensure each product features low emissions and high energy efficiency ratings. The brand has an outstanding reputation when it comes to quality, reliability and performance, which explains why 1 in every 3 boilers sold in this country is manufactured by the Vaillant Group. Although the boilers boast German design and engineering, they are actually manufactured in award-winning facilities across the UK. What’s more, Vaillant’s entire boiler range has been awarded Which? Best Buy.

Excellent Customer Reviews

Vaillant has shared some customer reviews on its website, but nearly 6,000 more can be found on the world’s most powerful review platform, Trustpilot. The brand has an overall score of 4 out of 5 stars on Trustpilot, with 74% of customers leaving a 5-star review and rating Vaillant boilers as excellent. Need we say more!

Which? Score

Vaillant scored top marks for nearly every category including build quality, customer satisfaction and engineer recommendation. It also got 5 stars for ease of servicing, ease of fixing common faults and availability of parts and spares, as well as 4 stars for reliability. The overall Which? score for Vaillant boilers is a very impressive 80%, which has led the brand to win the ‘Best Buy’ accolade.

Below, you can find the brand data results for Vaillant boilers, which we sourced from the Which? website.

Overall Score

80%

Reliability ⭐️⭐️⭐️⭐️
Customer Score ⭐️⭐️⭐️⭐️⭐️
Engineer Recommendation ⭐️⭐️⭐️⭐️⭐️
Build Quality ⭐️⭐️⭐️⭐️⭐️
Availabilty of parts and spares ⭐️⭐️⭐️⭐️⭐️
Ease of fixing a common fault ⭐️⭐️⭐️⭐️⭐️
Ease of servicing ⭐️⭐️⭐️⭐️⭐️

Based on responses from a May 2018 survey of 11,571 Which? members about their boilers. 

Vaillant Logo

ModelTypeDimensionsMaximum Flow RateOutputEfficiency RatingTypical Price
ecoFIT Pure Regular 12RegularH - 600 mm
W - 375 mm
D - 295 mm
N/A12 kWA 90% and above£730
ecoTEC Plus System 12SystemH - 720 mm
W - 440 mm
D - 338 mm
N/A12 kWA 90% and above£730
ecoTEC Plus 415Heat OnlyH - 720 mm
W - 375 mm
D - 340 mm
N/A15 kWB 86% - 90%£796.36
ecoTEC Plus 612SystemH - 720 mm
W - 440 mm
D - 335 mm
N/A12 kWB 86% - 90%£826.12
ecofit pure system 12SystemH - 700 mm
W - 390 mm
D - 295 mm
N/A12 kWA 90% and above£840
ecoFIT Pure Combi 25CombiH - 790 mm
W - 390 mm
D - 295 mm
14.1 l/min25 kWA 90% and above£850
ecoFIT Pure Regular 15RegularH - 600 mm
W - 375 mm
D - 295 mm
N/A15 kWA 90% and above£850
ecoTEC Plus System 15SystemH - 720 mm
W - 440 mm
D - 338 mm
N/A15 kWA 90% and above£850
ecoTEC Plus 615SystemH - 720 mm
W - 440 mm
D - 335 mm
N/A15 kWB 86% - 90%£863
ecoTEC Plus 418Heat OnlyH - 720 mm
W - 375 mm
D - 340 mm
N/A18 kWB 86% - 90%£871.84
ecoTEC Pro 28CombiH - 720 mm
W - 440 mm
D - 335 mm
11.5 l/min28 kWB 86% - 90%£875.88
ecoTEC Pro 24CombiH - 720 mm
W - 440 mm
D - 335 mm
9.4 l/min24 kWB 86% - 90%£884.36
ecoTEC Pro Combi 24CombiH - 720 mm
W - 440 mm
D - 338 mm
12.3 l/min24 kWA 90% and above£900
ecofit pure system 15SystemH - 700 mm
W - 390 mm
D - 295 mm
N/A15 kWA 90% and above£950
ecoFIT Pure Regular 18RegularH - 600 mm
W - 375 mm
D - 295 mm
N/A18 kWA 90% and above£950
ecoTEC Plus System 18SystemH - 729 mm
W - 440 mm
D - 338 mm
N/A18 kWA 90% and above£950
ecoTEC Plus 618SystemH - 720 mm
W - 440 mm
D - 335 mm
N/A18 kWB 86% - 90%£960.02
ecoTEC Plus 824CombiH - 720 mm
W - 440 mm
D - 335 mm
9.4 l/min24 kWB 86% - 90%£964
ecoTEC Plus 428Heat OnlyH - 720 mm
W - 375 mm
D - 340 mm
N/A28 kWB 86% - 90%£982.96
ecofit pure system 18SystemH - 700 mm
W - 390 mm
D - 295 mm
N/A18 kWA 90% and above£1000
ecoFIT Pure Combi 30CombiH - 790 mm
W - 390 mm
D - 295 mm
14.1 l/min30 kWA 90% and above£1000
ecofit pure system 25SystemH - 700 mm
W - 390 mm
D - 295 mm
N/A25 kWA 90% and above£1050
ecoTEC Plus System 24SystemH - 720 mm
W - 440 mm
D - 338 mm
N/A24 kWA 90% and above£1050
ecoTEC Plus 831CombiH - 720 mm
W - 440 mm
D - 335 mm
12.7 l/min31 kWB 86% - 90%£1060.88
ecoTEC Plus 624SystemH - 720 mm
W - 440 mm
D - 335 mm
N/A24 kWB 86% - 90%£1082.12
ecoFIT Pure Combi 35CombiH - 790 mm
W - 390 mm
D - 295 mm
14.1 l/min35 kWA 90% and above£1100
ecoFIT Pure Regular 25RegularH - 600 mm
W - 375 mm
D - 295 mm
N/A25 kWA 90% and above£1100
ecoTEC plus Combi 25CombiH - 440 mm
W - 720 mm
D - 338 mm
15.9 l/min25 kWA 90% and above£1110
ecofit pure system 30SystemH - 700 mm
W - 390 mm
D - 295 mm
N/A30 kWA 90% and above£1160
ecoTEC Plus 630SystemH - 720 mm
W - 440 mm
D - 335 mm
N/A30 kWB 86% - 90%£1189.82
ecoTEC Plus System 30SystemH - 720 mm
W - 440 mm
D - 338 mm
N/A30 kWA 90% and above£1200
ecoTEC Plus Storage 937CombiH - 720 mm
W - 440 mm
D - 597 mm
15.2 l/min37 kWB 86% - 90%£1205.65
ecoTEC Exclusive 832CombiH - 800 mm
W - 480 mm
D - 450 mm
12.9 l/min32 kWB 86% - 90%£1226.5
ecoFIT Pure Regular 30RegularH - 600 mm
W - 375 mm
D - 295 mm
N/A30 kWA 90% and above£1250
ecoTEC plus Combi 32CombiH - 440 mm
W - 720 mm
D - 338 mm
15.9 l/min32 kWA 90% and above£1250
ecoTEC plus Combi 32CombiH - 440 mm
W - 720 mm
D - 338 mm
15.9 l/min32 kWA 90% and above£1250
ecoTEC Plus 637SystemH - 720 mm
W - 440 mm
D - 335 mm
N/A37 kWB 86% - 90%£1257.41
ecoTEC Plus 837CombiH - 720 mm
W - 440 mm
D - 403 mm
15.2 l/min37 kWB 86% - 90%£1273.92
ecoTEC Exclusive Green iQ System 27SystemH - 720 mm
W - 440 mm
D - 338 mm
N/A27 kWA 90% and above£1300
ecoTEC Exclusive 838CombiH - 800 mm
W - 480 mm
D - 450 mm
15.2 l/min38 kWB 86% - 90%£1305
ecoTEC Plus System 37SystemH - 720 mm
W - 440 mm
D - 338 mm
N/A37 kWA 90% and above£1370
ecoTEC plus Combi 35CombiH - 440 mm
W - 720 mm
D - 338 mm
15.9 l/min35 kWA 90% and above£1380
ecoTEC Pro Combi 28CombiH - 720 mm
W - 440 mm
D - 338 mm
12.3 l/min28 kWA 90% and above£1400
ecoTEC Plus 438Heat OnlyH - 720 mm
W - 375 mm
D - 340 mm
N/A38 kWB 86% - 90%£1430.27
ecoFIT Pure Regular 35RegularH - 600 mm
W - 375 mm
D - 295 mm
N/A35 kWA 90% and above£1440
ecoTEC-plus-combi-38CombiH - 406 mm
W - 720 mm
D - 338 mm
15.9 l/min38 kWA 90% and above£1500
ecoTEC Pro Combi 30CombiH - 720 mm
W - 440 mm
D - 338 mm
12.3 l/min30 kWA 90% and above£1810
ecoTEC 46kW SystemSystemH - 800 mm
W - 480 mm
D - 450 mm
N/A46 kWA 90% and above£2200
ecoTEC Plus 48kW SystemSystemH - 720 mm
W - 440 mm
D - 405 mm
N/A48 kWA 90% and above£2200
ecoTEC Plus 64kW SystemSystemH - 720 mm
W - 440 mm
D - 473 mm
N/A64 kWA 90% and above£2600
ecoTEC 65kW SystemSystemH - 800 mm
W - 480 mm
D - 472 mm
N/A65 kWA 90% and above£2800
(Average retail prices which include VAT)

Key Questions for selecting your Boiler Installer

Ask your advisor key questions which will help make your decision on which boiler is right for you and your home. The key question is price and whether they will stick to the quote after the installation. Make sure there are no hidden costs. Ask them questions on their payment terms.  How do these match against your own requirements?  Do they install only A rated energy efficient boilers?  Energy efficient boilers will save you money.

Crucially, make sure you review their safety record and expertise. All boiler installations today are done by Gas Safe Registered engineers.  This ensures it’s done safely and legally. Another consideration is the flexibility on when your installer can fit your new boiler.  Make sure their timescales are convenient to you. Lastly,  ask them if they offer boiler insurance as part of their service.  You’d be looking for the first year of cover to be free.

Comparing Boiler Quotes and Prices

For the best and cheapest boiler price, you will have to do some shopping around. Get a a quote from a national installer and a local boiler installer. Compare them on the cost of the boiler and the price of installation.  Average installation costs are between £1,500 – £1,800. Comparing Vaillant Gas boilers prices could save you hundreds of pounds so it’s worth doing.

Get a Free Vaillant Boiler Quote

14 reviews for Vaillant Boilers

Average Rating: 2.6

  1. Rating:4

    Have just had this boiler installed and find it to be very efficient . Providing heat around the home and hot water when needed. Very happy.

  2. Rating:1

    ecoTECplus824 installed July’08 efficent boiler. F75 alarm appeared 2012 vaillant repair cost £300,,room thermostat renewed.
    April2015 New Diverter valve and new water pressure switch fitted £300.
    Still got F75 alarm which is a pain….Will i be buying another Vaillant.?????
    I want reliability

  3. Rating:3

    I have had an ecotec boiler for six years. Never again. It was recommended by the Energy Saving Trust, installed by a competent firm – and then the good things ended. In its short life it’s had major internal surgery and just like pressgirl’s comments above, various other parts have failed with the consequent cost of repairs and inconvenience. Its rubber hoses have perforated causing pressure loss and a fast switch off in case of rupture and tonight the timer has failed. Ok, that’s the timer’s first time but I’m starting to throw good money after bad. When the thing works it’s efficient and quiet and right for the size of the house but I shan’t recommend it to anyone and the plumber says it must have been built on Christmas day under protest!

  4. Rating:2

    I can echo the comments above from Pressgirl. I loved the Valiant boiler for 3 three years and then ….. the system has kept failing intermittently. Every winter is a nightmare as one does not know if the heating will work all winter or fail. Our gas engineer eventually asked us to call a more Valiant experienced engineer as he was at a loss and was unhappy at taking regular money from us.

  5. Rating:2

    I have a vaillant 937 and the diverter valve has gone already after only 3-years of relatively light use. Very disappointed as I’d believed this boiler to be the rolls royce of boilers.

  6. Rating:1

    The temperature control is totally not fit for purpose in this brand of boilers. It’s trying to be so clever that it gets it totally wrong. Factoring the outside temperature in the algorithm is one of those idea that sound great in theory but in practice is a total disaster. It makes the temperature control feature so unwieldy it’s simply unworkable. 4 years of trying to adjust the heating curve and making efforts to second-guess the algorithm and the temperature can still be out by as much as 6 Celsius (that could be either above or below the target temperature)! We have to adjust the control manually to avoid overheating or being cold. We have asked Vaillant if we cold just replace the temperature control with a bog-standard thermostat. But they don’t do that kind of product. I very much look forward to replacing this boiler with something simpler that actually works.

  7. Rating:1

    I can honestly say that Vaillant has without doubt the worst customer service (or lack of) that you will ever experience. They just basically ignore you until you go away. Had the misfortune of owning this vaillant ecotec unreliable piece of junk which was installed by one of their accredited installers for 4 years now … Stay well away and buy another make.

  8. Rating:3

    We have just had a Vaillant Ecotec boiler installed – not yet moved into the house but have the underfloor heating on. The boiler is installed in a very small hallway/lobby and we have noticed how much heat is being emitted from the boiler itself It is very significant so I am wondering about the insulation of the boiler itself. We would have thought the boiler these days would be very well insulated. Are there any views on this aspect.

  9. Rating:3

    Repairs had last been done about 10 years ago to a Vaillant Combi Boiler as per Br Gas recommendations, and so served 2 sinks, and 3 plus radiators (kitchen, bedroom, sitting room plus 1 small bathroom).

  10. Rating:1

    Vaillent pro24 combi fitted June 2012 major repair required 12 months one week after fitting warranty had run out by a week, and it continued for the next 3 years , to have repair after repair,it has now been installed for 4 years and another major repair,this boiler will be replaced next week and it will most definitely will not be a Vallient

  11. Rating:3

    We need gas fired boiler
    31 kW 4 mos
    34 kw 2 nos
    37 kw 4 nos

    Fan coil units
    47 nos units required 6 to 9 kw

    All things required European brand

  12. Rating:3

    I would like to replace my 831 eco tec plus combi( about 12 years old) with a boiler that will fit on the same flow and pipe work

  13. Rating:3

    Valiant boiler bought new when we moved into new house 5 years ago simply the worst product I have ever bought repairs required every winter and now looking to cut my losses and replace with a bosch valiant total rubbish

Leave a Review

Your email address will not be published. Required fields are marked *