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	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

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	Sizes 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

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

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.

Vaillant Overall Score

Reliability	4 Stars
Customer Score	5 Starss
Engineer Recommendation	5 Stars
Build Quality	5 Stars
Availability of parts and Spares	5 Stars
Ease of fixing a common fault	5 Stars
Ease of Servicing	5 Stars

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

Vaillant Boiler Problems and Repairs

If you own a Vaillant boiler or are just about to have one installed, you might experience issues with your boiler from time to time. Most problems tend to occur during the colder months of the year and after long periods of your heating remaining switched off. Some Vaillant boiler problems can be addressed without the need to contact a professional but the majority of issues will require the expertise of a qualified engineer. We’ve provided a guide to the most Common Vaillant Boiler Problems and Repairs that you are likely to encounter and what you’ll need to do next.

Vaillant Boiler Fault Codes

Many Vaillant boiler problems will result in a fault code appearing on your boiler’s control panel, and the fault codes are designed to help you and your engineer to determine what has gone wrong with your system. Most Vaillant boiler fault codes will begin with the letter F, followed by a number, but they may differ depending on the boiler model you own. Some user manuals will have a page dedicated to fault codes, whereas others just include status codes and diagnostics codes. If your Vaillant boiler is displaying a fault code and you’re having trouble finding out what it means, feel free to use the table in our guide to Vaillant Boiler Fault Codes.

Vaillant Boiler Warranty

No matter which Vaillant boiler you have installed, it will come with a manufacturer-backed warranty that covers you for certain parts and labour charges in the event of a breakdown. The warranty is there to provide you with peace of mind should you need any repairs during the warranty validation period, and the length of the warranty can vary depending on the boiler model and who you choose to install the boiler. You also need to know that strict terms and conditions must be followed to keep the warranty valid. Take a look at our handy guide to the Vaillant Boiler Warranty to learn more about what is covered by the warranty, how to register it, and the terms and conditions you need to follow.

Vaillant Boiler Controls

Vaillant offers a wide range of optional boiler controls that are designed to reduce fuel costs, ensure your home remains comfortable and make sure your boiler runs in the most efficient way possible. There are lots of Vaillant boiler controls available, from traditional controls and simple heating timers to smartphone app-based thermostat controls. The most appropriate solutions will depend on which Vaillant boiler type and model you have, as well as your individual requirements. To help you make the right choice, we’ve put together a guide to Vaillant Boiler Controls and how they enable you to control your heating and hot water system.

Show:Boiler Typeall boiler typescombi boilers onlyheat only boilers onlyregular boilers onlysystem boilers onlyPrice Rangeall price rangesbetween £500 and £750between £750 and £1000between £1000 and £1250between £1250 and £1500more than £1500

Model	Type	Dimensions	Maximum Flow Rate	Output	Efficiency Rating	Typical Price
ecoFIT Pure Regular 12	Regular	H - 600 mm W - 375 mm D - 295 mm	N/A	12 kW	A90% and above	£730
ecoTEC Plus System 12	System	H - 720 mm W - 440 mm D - 338 mm	N/A	12 kW	A90% and above	£730
ecoTEC Plus 415	Heat Only	H - 720 mm W - 375 mm D - 340 mm	N/A	15 kW	B86% - 90%	£796.36
ecoTEC Plus 612	System	H - 720 mm W - 440 mm D - 335 mm	N/A	12 kW	B86% - 90%	£826.12
ecofit pure system 12	System	H - 700 mm W - 390 mm D - 295 mm	N/A	12 kW	A90% and above	£840
ecoFIT Pure Combi 25	Combi	H - 790 mm W - 390 mm D - 295 mm	14.1 l/min	25 kW	A90% and above	£850
ecoFIT Pure Regular 15	Regular	H - 600 mm W - 375 mm D - 295 mm	N/A	15 kW	A90% and above	£850
ecoTEC Plus System 15	System	H - 720 mm W - 440 mm D - 338 mm	N/A	15 kW	A90% and above	£850
ecoTEC Plus 615	System	H - 720 mm W - 440 mm D - 335 mm	N/A	15 kW	B86% - 90%	£863
ecoTEC Plus 418	Heat Only	H - 720 mm W - 375 mm D - 340 mm	N/A	18 kW	B86% - 90%	£871.84
ecoTEC Pro 28	Combi	H - 720 mm W - 440 mm D - 335 mm	11.5 l/min	28 kW	B86% - 90%	£875.88
ecoTEC Pro 24	Combi	H - 720 mm W - 440 mm D - 335 mm	9.4 l/min	24 kW	B86% - 90%	£884.36
ecoTEC Pro Combi 24	Combi	H - 720 mm W - 440 mm D - 338 mm	12.3 l/min	24 kW	A90% and above	£900
ecofit pure system 15	System	H - 700 mm W - 390 mm D - 295 mm	N/A	15 kW	A90% and above	£950
ecoFIT Pure Regular 18	Regular	H - 600 mm W - 375 mm D - 295 mm	N/A	18 kW	A90% and above	£950
ecoTEC Plus System 18	System	H - 729 mm W - 440 mm D - 338 mm	N/A	18 kW	A90% and above	£950
ecoTEC Plus 618	System	H - 720 mm W - 440 mm D - 335 mm	N/A	18 kW	B86% - 90%	£960.02
ecoTEC Plus 824	Combi	H - 720 mm W - 440 mm D - 335 mm	9.4 l/min	24 kW	B86% - 90%	£964
ecoTEC Plus 428	Heat Only	H - 720 mm W - 375 mm D - 340 mm	N/A	28 kW	B86% - 90%	£982.96
ecofit pure system 18	System	H - 700 mm W - 390 mm D - 295 mm	N/A	18 kW	A90% and above	£1000
ecoFIT Pure Combi 30	Combi	H - 790 mm W - 390 mm D - 295 mm	14.1 l/min	30 kW	A90% and above	£1000
ecofit pure system 25	System	H - 700 mm W - 390 mm D - 295 mm	N/A	25 kW	A90% and above	£1050
ecoTEC Plus System 24	System	H - 720 mm W - 440 mm D - 338 mm	N/A	24 kW	A90% and above	£1050
ecoTEC Plus 831	Combi	H - 720 mm W - 440 mm D - 335 mm	12.7 l/min	31 kW	B86% - 90%	£1060.88
ecoTEC Plus 624	System	H - 720 mm W - 440 mm D - 335 mm	N/A	24 kW	B86% - 90%	£1082.12
ecoFIT Pure Combi 35	Combi	H - 790 mm W - 390 mm D - 295 mm	14.1 l/min	35 kW	A90% and above	£1100
ecoFIT Pure Regular 25	Regular	H - 600 mm W - 375 mm D - 295 mm	N/A	25 kW	A90% and above	£1100
ecoTEC plus Combi 25	Combi	H - 440 mm W - 720 mm D - 338 mm	15.9 l/min	25 kW	A90% and above	£1110
ecofit pure system 30	System	H - 700 mm W - 390 mm D - 295 mm	N/A	30 kW	A90% and above	£1160
ecoTEC Plus 630	System	H - 720 mm W - 440 mm D - 335 mm	N/A	30 kW	B86% - 90%	£1189.82
ecoTEC Plus System 30	System	H - 720 mm W - 440 mm D - 338 mm	N/A	30 kW	A90% and above	£1200
ecoTEC Plus Storage 937	System	H - 720 mm W - 440 mm D - 597 mm	15.2 l/min	37 kW	B86% - 90%	£1205.65
ecoTEC Exclusive 832	Combi	H - 800 mm W - 480 mm D - 450 mm	12.9 l/min	32 kW	B86% - 90%	£1226.5
ecoFIT Pure Regular 30	Regular	H - 600 mm W - 375 mm D - 295 mm	N/A	30 kW	A90% and above	£1250
ecoTEC plus Combi 32	Combi	H - 440 mm W - 720 mm D - 338 mm	15.9 l/min	32 kW	A90% and above	£1250
ecoTEC plus Combi 32	Combi	H - 440 mm W - 720 mm D - 338 mm	15.9 l/min	32 kW	A90% and above	£1250
ecoTEC Plus 637	System	H - 720 mm W - 440 mm D - 335 mm	N/A	37 kW	B86% - 90%	£1257.41
ecoTEC Plus 837	Combi	H - 720 mm W - 440 mm D - 403 mm	15.2 l/min	37 kW	B86% - 90%	£1273.92
ecoTEC Exclusive Green iQ System 27	System	H - 720 mm W - 440 mm D - 338 mm	N/A	27 kW	A90% and above	£1300
ecoTEC Exclusive 838	Combi	H - 800 mm W - 480 mm D - 450 mm	15.2 l/min	38 kW	B86% - 90%	£1305
ecoTEC Plus System 37	System	H - 720 mm W - 440 mm D - 338 mm	N/A	37 kW	A90% and above	£1370
ecoTEC plus Combi 35	Combi	H - 440 mm W - 720 mm D - 338 mm	15.9 l/min	35 kW	A90% and above	£1380
ecoTEC Pro Combi 28	Combi	H - 720 mm W - 440 mm D - 338 mm	12.3 l/min	28 kW	A90% and above	£1400
ecoTEC Plus 438	Heat Only	H - 720 mm W - 375 mm D - 340 mm	N/A	38 kW	B86% - 90%	£1430.27
ecoFIT Pure Regular 35	Regular	H - 600 mm W - 375 mm D - 295 mm	N/A	35 kW	A90% and above	£1440
ecoTEC-plus-combi-38	Combi	H - 406 mm W - 720 mm D - 338 mm	15.9 l/min	38 kW	A90% and above	£1500
ecoTEC Pro Combi 30	Combi	H - 720 mm W - 440 mm D - 338 mm	12.3 l/min	30 kW	A90% and above	£1810
ecoTEC 46kW System	System	H - 800 mm W - 480 mm D - 450 mm	N/A	46 kW	A90% and above	£2200
ecoTEC Plus 48kW System	System	H - 720 mm W - 440 mm D - 405 mm	N/A	48 kW	A90% and above	£2200
ecoTEC Plus 64kW System	System	H - 720 mm W - 440 mm D - 473 mm	N/A	64 kW	A90% and above	£2600
ecoTEC 65kW System	System	H - 800 mm W - 480 mm D - 472 mm	N/A	65 kW	A90% and above	£2800

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.